MAX14616EWA+T [MAXIM]
Micro-USB Interface Circuit Plus Intelligent Li Battery Chargers;
| 型号： | MAX14616EWA+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Micro-USB Interface Circuit Plus Intelligent Li Battery Chargers 电池 |
| 文件： | 总48页 (文件大小：1936K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EVALUATION KIT AVAILABLE
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
General Description
Benefits and Features
● High Level of Integration
The MAX14616/MAX14616A are a complete solution
for interfacing to a micro-USB connector and include
an advanced charger detection block, a linear battery
charger, and a switch block capable of multiplexing USB,
UART, audio, and composite video signals. The devices
include an LED driver for battery charge status and bat-
tery present detection.
• Complete Solution for Micro-USB Connector
Multiplexing
USB 2.0 Hi-Speed Switch with 3Ω (typ)
On-Resistance
Negative-Rail Audio Inputs with Low THD
Detection Logic for Accessory Identification
Composite Video Load Removal Detection
The MAX14616/MAX14616A support multiplexing USB
2.0 Hi-Speed, UART, and stereo audio signals with a
single micro-USB connector. The USB channel features
low 3Ω (typ) on-resistance and 7pF (typ) on capacitance
to minimize USB signal degradation. The audio inputs
feature negative rail signal operation down to -2V and
0.1Ω on-resistance flatness for low THD.
● Internal Li+ Battery Charger with +28V (max) Input
● USB Battery Charger Detection
• Supports USB BC1.1 with Advanced Features
from USB BC1.2
• Data Contact Detection (DCD) Support
• USB DCP, SDP, and CDP Detection
• Non-USB Defined Charger Detection Capability
The MAX14616/MAX14616A charger detection block
supports USB Battery Charger Detection Revision 1.1
requirements and also detects many common non-USB-
defined power adapters. The SFOUT LDO provides a
voltage-limited USB VBUS output for powering devices
such as USB transceivers that cannot withstand high
voltage. The MAX14616/MAX14616A include a compos-
ite video cable unplug detector capable of detecting the
removal of a video termination resistor.
● High-Voltage Protected LDO for USB Transceiver
● Charger Status LED Output Driver
● Battery Presence Monitor
● High-ESD Protection on COMN1, COMP2, and UID
±15kV for Human Body Model
±10kV for IEC 61000-4-2 Air Gap Discharge
±7kV for IEC 61000-4-2 Contact Discharge
The MAX14616/MAX14616A battery charger adds a bat-
tery present detector to automatically disable the battery
charger in case the battery is removed. They also include
an open-drain LED driver to indicate the battery charger
operation status.
● Saves Power in Portable Application
• Low Supply Current
● Saves Space
• 25-Bump, 2mm x 2mm, WLP Package
The MAX14616/MAX14616A are available in a 25-bump
(2mm x 2mm, 0.4mm pitch) WLP package and operates
over the -40°C to +85°C extended temperature range.
Ordering Information appears at end of data sheet.
Applications
● Media Players
● Cell Phones
● eReaders
● Tablets
● Digital Cameras
19-6180; Rev 1; 6/12
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Absolute Maximum Ratings
(All voltages referenced to GND.)
SWITCH DISABLED and CPEn = 0 (Note 2)
SL1, SR2, MIC, IDB, DN1, DP2,
UT1, UR2.........................................-0.3V to (V
BAT, JIG, V , INT, THM.........................................-0.3V to +6V
IO
LED..........................................................................-0.3V to +6V
+ 0.3V)
CCINT
VB (Charger Mode)................................................0.3V to +30V
COMN1, COMP2, UID ............................................-0.3V to +6V
Continuous Current into COMN1, COMP2 ....................±200mA
Continuous Current into BAT, VB.................................±1300mA
Continuous Current into All Other Bumps......................±100mA
VB (Microphone Mode) (Note 1).......-0.3V to (V
+ 0.3V)
SWPOS
SFOUT–VB.........................................................................+0.3V
CAP .........................................................................-0.3V to +4V
SDA, SCL................................................-0.3V to (V
SWITCH ENABLED or CPEn = 1 (Note 1)
SL1, SR2, COMN1, COMP2, UID, MIC,
+ 0.3V)
Continuous Power Dissipation (T = +70°C)
BAT
A
WLP (derate 19.2mW/°C above +70°C)....................1536mW
Operating Temperature Range........................... -40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range............................ -65°C to +150°C
Soldering Temperature (reflow) (Note 3).........................+260°C
IDB, DN1, DP2 ..............................-2.1V to (V
UT1, UR2.......................................-0.3V to (V
+ 0.3V)
+ 0.3V)
SWPOS
SWPOS
Note 1: V
Note 2: V
= min(V
, +3.3V)
, min(V , +4V))
VB
SWPOS
CCINT
CCINT
= max(V
BAT
Note 3: The WLP package is constructed using a unique set of package techniques that impose a limit on the thermal profile that
the device can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder pro-
files recommended in the industry-standard specification JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection
reflow. Preheating is required. Hand or wave soldering is not allowed.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
(Note 4)
Package Thermal Characteristics
WLP
Junction-to-Ambient Thermal Resistance (θ ) ..........52°C/W
JA
Note 4: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.6V,
BAT
BAT
VB
A
V
= 5.0V, T = +25°C.) (Note 5)
A
VB
PARAMETER
SYMBOL
CONDITIONS
MIN
2.8
3.5
1.6
0
TYP
MAX
5.5
28
UNITS
V
BAT
Supply Voltage
V
V
VB
V
5.5
28
IO
Allowed VB Input-Voltage Range
V
V
V
VB
BAT Undervoltage Lockout
Threshold
V
0.4
2.0
3
2.65
6
UVLO
Low-power mode, LowPwr
= 1, CPEn =0, ADCEn = 0
V
V
= 3.6V,
= 0V, no
BAT
VB
BAT Supply Current
I
µA
BAT
accessory
attached
LowPwr = 0, CPEn = 0
LowPwr = 0, CPEn = 1
28
45
50
65
Maxim Integrated
│ 2
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.6V,
BAT
BAT
VB
A
V
= 5.0V, T = +25°C.) (Note 5)
A
VB
PARAMETER
SYMBOL
CONDITIONS
= 5V, CPEn = 0,
MIN
TYP
MAX
UNITS
V
VB
MBCHOSTEN = 0, SFOUT
350
500
V
= 0V,
BAT
is off, UID = open
I
= 0mA,
OUT
VB Supply Current
I
µA
VB
charger forced
V
= 5V, CPEn = 0,
VB
off
MBCHOSTEN= 0, SFOUT
470
3000
is on, UID = open
V
Supply Current
I
LED = unconnected
0.1
4
1
µA
V
IO
IO
Internal VB Regulator Voltage
V
3.3
3.3
5.5
PVB
Internal Positive Regulator
Voltage for Switches
V
V
3.4
3.5
V
V
SWPOS
SWNEG
Internal Negative Regulator
Voltage for Switches
-2
-1.9
-1.8
CHARGER DETECTION
VB-Detect-Threshold Voltage
Rising
V
3.2
3.4
3.6
V
VBDET
VB-Detect-Threshold Voltage
Hysteresis
V
0.5
0.6
V
V
VBDET_HYST
V
V
,
DM_SRC
DAT_REF
DP_SRC
DP_SRC and DM_SRC Voltage
0µA ≤ I
≤ 200µA
0.5
0.7
LOAD
DAT_REF Voltage
LGC Voltage
V
0.25
1.15
0.3
0.35
1.3
V
V
V
1.24
LGC
I
I
,
DP_SINK
DP and DM Sink Current
DP Source Current
0.15V ≤ V
= V
≤ 3.6V
55
5.5
17
80
8
105
10
µA
µA
kΩ
DP
DM
DM_SINK
I
0V ≤ V
≤ 2.5V
DP_SRC
DP
DP and DM Pulldown
Resistance
R
R
,
DP_DWN
20
23.3
DM_DWN
I
I
,
DP_PD
DP/DM Pulldown Current
V
V
= 0.15V or 3.6V
= 5V
0.01
0.15
0.5
µA
%
DM
DM_PD
V
V
V
22.5
42.3
70
25
47
27.5
51.7
80
BUS25
BUS47
BUS75
COMN1 to VB Voltage Ratio
VB
75
V
Reset Falling Threshold
V
0.5
0.8
18.5
18.3
1.1
V
IO
IO_RST_TH
V
V
rising
falling
18.0
19.0
Battery Present Detect
Threshold
THM
V
% of V
%
THM
SFOUT
THM
ACCESSORY DETECTION
UID Low-Power Pullup Voltage
V
V
V
= 3.6V, V = 0V, LowPwr = 1
1.6
0.7
V
V
UID_PU
BAT
VB
UID Low-Power Threshold
Voltage
V
R
= 3.6V, V = 0V, LowPwr = 1
0.4
1
UID_LP
BAT
VB
UID Low-Power Pullup Resistance
ADC Low Threshold
2
3.4
40
MΩ
Ω
UID_LP
R
32
49
ADCLow
Maxim Integrated
│ 3
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.6V,
BAT
BAT
VB
A
V
= 5.0V, T = +25°C.) (Note 5)
A
VB
PARAMETER
SYMBOL
CONDITIONS
= 2.55V and 0.9V
MIN
2.19
5.756
16.032
45.214
146.88
2.235
0
TYP
2.28
6
MAX
2.37
6.24
17.368
48.786
159.12
2.735
0.032
0.472
1.433
2.112
2.684
3.35
4.11
UNITS
µA
V
V
V
V
V
V
UID
UID
UID
UID
UID
UID
= 2.50V and 0.76V
= 2.35V and 0.70V
= 2.20V and 0.57V
= 2.12V and 0.05V
= 2.04V and 0.05V
16.7
47
ADC ID Pullup Current
I
PUP
153
2.5
mA
GND
R
0.049
0.531
1.722
2.465
3.091
3.826
4.67
5.73
7.39
9.5
0.075
1
VID
1kΩ resistor
R1
2
R2
2.604
3.208
4.014
4.82
6.03
8.03
10.03
12.03
14.46
17.26
20.5
24.07
28.7
34
R3
R4
R5
5.05
6.54
8.43
10.31
12.69
14.77
17.61
20.79
24.63
29.3
34.7
43
R6
R7
R8
R9
11.6
14.03
16.76
19.92
23.49
27.8
33
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
Open
ADC Detection Resistors
R
kΩ
ADC
39
40.2
49.9
64.9
80.07
102
49.6
60.4
76.3
95.6
117
53.4
67.6
84.9
104
121
129
143
150
153
173
200
212
239
255
260
293
301
312
350
365
384
425
442
450
508
523
533
601
619
655
737
1000
1032
1158
Maxim Integrated
│ 4
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.6V,
BAT
BAT
VB
A
V
= 5.0V, T = +25°C.) (Note 5)
A
VB
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
USB ANALOG SWITCH (DN1, DP2)
RUID = open, LowPwr = 1 and CPEn = 0
(Note 2)
0
0
V
CCINT
Analog Signal Range
On-Resistance
V
, V
V
DN1 DP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1 (Note 1)
V
SWPOS
(RUID < 1050kΩ or LowPwr = 0) and CPEn
R
= 1, V
= 3.0V, I , I = 10mA,
3
6
Ω
Ω
Ω
ONUSB
BAT
COMN1 COMP2
0V ≤ V
V
≤ 3.0V
COMN1, COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance Match Between
Channels
∆R
= 1, V
= 3.0V, I
, I
= 10mA,
0.5
0.3
ONUSB
BAT
COMN1 COMP2
V
, V
= 400mV
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 3.0V, I , I = 10mA,
On-Resistance Flatness
Off-Leakage Current
On-Leakage Current
0.1
R
FLATUSB
BAT
COMN1 COMP2
0V ≤ V
, V
≤ 3.3V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch open, V , V
BAT
DN1 DP2
-360
-360
+360
+360
nA
nA
I
LUSB (OFF)
= 0.3V or 2.5V and V
, V
=
COMN1 COMP2
2.5V or 0.3V
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch closed, V , V
DN1 DP2
I
USB(ON)
BAT
= 0.3V or 2.5V
UART ANALOG SWITCHES (UT1, UR2)
RUID = open, LowPwr = 1 and CPEn = 0
(Note 2)
0
0
V
CCINT
Analog Signal Range
On-Resistance
V
V
V
UT1, UR2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1 (Note 1)
V
SWPOS
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V
= 3.0V, I , I = 10mA,
3
6
Ω
R
ONUART
BAT
COMN1 COMP2
0V ≤ V
, V
≤ 3.0V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance Match Between
Channels
= 1, V
= 3.0V, I
, I
= 10mA,
0.5
0.3
Ω
Ω
∆R
ONUART
BAT
COMN1 COMP2
V
, V
= 1.5V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 3.0V, I , I = 10mA,
On-Resistance Flatness
Off-Leakage Current
0.1
R
FLATUART
BAT
COMN1 COMP2
0V ≤ V
, V
≤ 3.0V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch open, V , V
BAT
UT1 UR2
-360
+360
nA
I
LUART(OFF)
= 0.3V or 2.5V and V
, V
=
COMN1 COMP2
2.5V or 0.3V
Maxim Integrated
│ 5
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.6V,
BAT
BAT
VB
A
V
= 5.0V, T = +25°C.) (Note 5)
A
VB
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Leakage Current
= 1, V
= 4.2V, switch closed,
-360
+360
nA
I
LUART(ON)
BAT
V
, V
= 0.3V or 2.5V
UT1 UR2
AUDIO ANALOG SWITCHES (SL1, SR2)
RUID = open, LowPwr = 1 and CPEn = 0
(Note 2)
0
V
CCINT
Analog Signal Range
On-Resistance
V
V
AUDIO
(RUID < 1050kΩ or LowPwr=0) and CPEn =
1 (Note 1)
V
V
SWPOS
SWNEG
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V
= 3.0V, I , I = 10mA,
3
6
Ω
Ω
Ω
R
ONA
BAT
COMN1 COMP2
0V ≤ V
, V
≤ 3.0V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance Match Between
Channels
= 1, V
= 3.0V, I
, I
= 10mA,
0.5
0.3
∆R
ONA
BAT
COMN1 COMP2
V
, V
= 1.5V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 3.0V, I , I = 10mA,
On-Resistance Flatness
Audio Off-Leakage Current
Audio On-Leakage Current
0.1
R
FLATA
BAT
COMN1 COMP2
0V ≤ V
, V
≤ 3.0V
COMN1 COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch open, V
,
SL1
BAT
-360
+360
nA
I
LA(OFF)
V
V
= 0.3V or 2.5V, V
,
SR2
COMN1
= 2.5V or 0.3V
COMP2
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch closed, V
,
SL1
-360
30
+360
170
nA
I
LA(ON)
BAT
V
= 0.3V or 2.5V
SR2
Shunt Resistor
I
= 10mA
100
Ω
R
SHUNT
SHUNT
MIC ANALOG SWITCHES (MIC)
RUID = open, LowPwr = 1 and CPEn = 0
(Note 2)
0
0
V
CCINT
Analog Signal Range
V
V
MIC
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1
2.5
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance
= 1, V
3.0V
= 3.0V, I
= 10mA, 0V ≤ V ≤
MIC
30
3
50
10
Ω
Ω
R
ONMIC
BAT
MIC
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance Flatness
MIC Off-Leakage Current
= 1, V
3.0V
= 3.0V, I
= 10mA, 0V ≤ V
≤
R
FLATMIC
BAT
MIC
MIC
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch open,
-360
+360
nA
I
LMIC(OFF)
BAT
V
= 0.3V or 2.5V, V = 2.5V or 0.3V
VB
MIC
Maxim Integrated
│ 6
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.6V,
BAT
VB
A
BAT
V
= 5.0V, T = +25°C.) (Note 5)
VB
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(RUID < 1050kΩ or LowPwr = 0) and CPEn
MIC On-Leakage Current
= 1, V
= 4.2V, switch closed,
32
60
µA
I
LMIC(ON)
BAT
V
= 0.3V or 2.5V
MIC
ID BYPASS ANALOG SWITCH (IDB)
RUID = open, LowPwr = 1 and CPEn = 0
(Note 2)
0
V
CCINT
Analog Signal Range
V
V
IDB
(RUID < 1050kΩ or LowPwr = 0) and CPEn
=1
V
V
SWPOS
SWNEG
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance
= 1, V
2.5V
= 3.0V, I
= 10mA, 0V ≤ V ≤
IDB
3
6
Ω
Ω
R
ONIDB
BAT
IDB
(RUID < 1050kΩ or LowPwr = 0) and CPEn
On-Resistance Flatness
IDB Off-Leakage Current
IDB On-Leakage Current
= 1, V
2.5V
= 3.0V, I
= 10mA, 0V ≤ V ≤
IDB
0.1
0.3
R
FLATIDB
BAT
IDB
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch open, V = 0.3V
-360
-360
+360
+360
nA
nA
I
LIDB(OFF)
BAT
IDB
or 2.5V and V
= 2.5V or 0.3V
UID
(RUID < 1050kΩ or LowPwr = 0) and CPEn
= 1, V = 4.2V, switch closed, V = 0.3V
I
LIDB(ON)
BAT
IDB
or 2.5V
DIGITAL SIGNALS (INT, SCL, SDA, JIG, BOOT, LED)
Input Logic-High
1.4
V
V
V
IH
Input Logic-Low
0.4
V
IL
INLEAK
Input Leakage Current
-250
+250
nA
I
V
, V
INTL JIGL,
V
Open-Drain Output-Voltage Low
I
= 3mA
0.4
V
SINK
LEDL
DYNAMIC PERFORMANCE
Analog Switch Turn-On Time
Analog Switch Turn-Off Time
Break-Before-Make Delay Time
MUIC Clock Period
I2C STOP to switch on, R = 50Ω
0.2
0.1
0.5
0.5
ms
ms
µs
t
ON
L
I2C STOP to switch off, R = 50Ω
t
OFF
L
R = 50Ω, T = +25°C (Note 6)
0
t
BBM
L
A
14.64
46
µs
t
CK
DPSRC_ON
USB Charger Detect Time
40
60
ms
t
Resistor attached to ID until JIG assert
(Note 7)
JIG Assertion Time
0.5
ms
Charger Detect Current Delay
VBUS Debounce Time
DCD Debounce Time
46
20
36
60
40
44
ms
ms
ms
t
VDPSRC_HICRNT
30
40
t
MDEB
Maxim Integrated
│ 7
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.6V,
BAT
VB
A
BAT
V
= 5.0V, T = +25°C.) (Note 5)
VB
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
2.2
UNITS
sec
DCDCpl = 0
DCDCpl = 1
1.8
2
DCD Timeout
900
ms
Charger Detection Delay
Timeout
CDDelay = 1
500
7
ms
pF
pF
Applied voltage is 0.5V , DC bias = 0V,
PP
f = 240MHz, COMN1/COMP2 connected to
DN1/DP2
COMN1, COMP2
On Capacitance
C
ONCOM
Applied voltage is 0.5V , DC bias = 0V,
PP
f = 1MHz, UID connected to MIC
UID On Capacitance
Off Capacitance
7
C
ONUID
UT1, UR2
3
3
3
3
Applied voltage is 0.5V
DC bias = 0V,
f = 1MHz
,
PP
DN1, DP2
MIC
pF
C
OFF
IDB
R = 50Ω, f = 20kHz,
L
Off-Isolation
MIC Isolation
UT1, UR2
-60
80
dB
dB
V
, V
= 0.5V
COMN1 COMP2 PP
BAT to MIC, MIC to UID switch enabled,
R = 600Ω, 100Hz ≤ f ≤ 6kHz,
L
V
= 3.6V ± 0.5V
BAT
Noise from BAT to COMN1, COMP2 or MIC,
R = 50Ω, f = 10kHz, V = 3.6V ± 0.2V
BAT Supply PSRR
Crosstalk
90
dB
dB
L
BAT
Any switch to any switch, R = 50Ω,
L
100
f = 20kHz, V
, V
= 1V
COMN1 COMP2 RMS
MIC channel, 20Hz ≤ f ≤ 20kHz, V
,
COMN1
MIC Total Harmonic Distortion
V
= 0.5V , R = 50Ω, DC bias = 0V,
0.05
%
THD
COMP2
PP
L
T
= +25°C
A
BATTERY CHARGER (V
= 5V, V
= 4V, T = -40°C to +85°C, unless otherwise specified)
VB
BAT A
VBUS Charger Operating Range
4.0
V
V
V
V
BUSOP
OVLO
V
V
V
– V
– V
– V
, rising
150
20
250
45
350
VB
VB
VB
BAT
BAT
BAT
VBUSOK Trip Point
, falling
100
4.0
mV
V
BTP
, hysteresis
205
3.9
Input-Undervoltage Threshold
VB rising
3.8
7.1
V
BUVLO
Input-Undervoltage Threshold
Hysteresis
600
mV
OTPCGHCVS = 00
7.5
6.0
6.5
7.0
7.8
OTPCGHCVS = 01
OTPCGHCVS = 10
OTPCGHCVS = 11
Input-Overvoltage Protection
Threshold
VB rising
V
V
OVLO
Maxim Integrated
│ 8
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.6V,
BAT
VB
A
BAT
V
= 5.0V, T = +25°C.) (Note 5)
VB
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input-Overvoltage Threshold
Hysteresis
200
mV
V
OVLO_HYS
V
V
V
I
= 6.0V, I
= 5.0V, I
= 0mA
5.0
5.25
4.9
5.5
VB
VB
VB
SFOUT
SFOUT LDO Voltage
V
V
SFOUT
= 15mA
SFOUT
VB to BAT Input Resistance
= 4.1V, V
= 4.0V
0.5
4.2
Ω
BAT
T
T
= +25°C
4.179
4.158
4.221
4.242
= 5mA,
A
A
BAT
BAT Battery Regulation Voltage
V
MBCCVWRC = 0000
= -40°C to +85°C
4.2
MBCCVWRC = 0001
MBCCVWRC = 1111
4.0
BAT Regulation Programmable
Range
I
= 5mA
BAT
V
V
BATREG
(Note 8)
4.35
BAT Restart Fast-Charge
Threshold
From BAT regulation voltage, active only
when AUTOSTOP is enabled
-150
62
mV
ms
V
BATRS
BAT Restart Fast-Charge
Debounce
V
= 3.5V
MBCICHWRCL = 0
90
BAT
MBCICHWRCH = 0000
MBCICHWRCH = 0001
MBCICHWRCH = 0010
MBCICHWRCH = 0011
MBCICHWRCH = 0100
MBCICHWRCH = 0101
MBCICHWRCH = 0110
MBCICHWRCH = 0111
MBCICHWRCH = 1000
MBCICHWRCH = 1001
MBCICHWRCH = 1010
MBCICHWRCH = 1011
MBCICHWRCH = 1100
MBCICHWRCH = 1101
MBCICHWRCH = 1110
MBCICHWRCH = 1111
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
414
486
Battery Fast-Charge Current
mA
I
V
= 3.5V,
BAT
BAT
MBCICHWRCL = 1
Maxim Integrated
│ 9
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.6V,
BAT
VB
A
BAT
V
= 5.0V, T = +25°C.) (Note 5)
VB
A
PARAMETER
SYMBOL
CONDITIONS
EOCS = 0000
MIN
TYP
50
MAX
UNITS
EOCS = 0001
EOCS = 0010
EOCS = 0011
EOCS = 0100
EOCS = 0101
EOCS = 0110
EOCS = 0111
EOCS = 1000
EOCS = 1001
EOCS = 1010
EOCS = 1011
EOCS = 1100
EOCS = 1101
EOCS = 1110
EOCS = 1111
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
Battery End-of-Charge
Threshold
I
falling, battery
BAT
mA
I
BAT_STOP
is charged
VB Prequalification Charge
Current
V
= 2V, V = 5V
93
mA
I
PRECHG
BAT
VB
Battery Charger Soft-Start Time
Precharge Threshold
Ramp time from 93mA to fast-charge current
1.2
2.5
ms
V
V
PRECHG
Precharge Threshold
Hysteresis
170
mV
min
Precharge Watchdog Timeout
30
5
TCHW = 000,001, 010, 101, or 110
TCHW = 011
Fast-Charge Timer
6
Hour
TCHW = 100
7
Top-Off Timer
30
+105
min
°C
Die Temperature Thermal Limit
Die temperature rising (Note 9)
T
J
Maxim Integrated
│ 10
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Electrical Characteristics (continued)
(V
= 2.8V to 5.5V, V
= 3.5V to 5.5V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.6V,
BAT
VB
A
BAT
V
= 5.0V, T = +25°C.) (Note 5)
VB
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I2C TIMING SPECIFICATIONS (Figure 1)
I2C Maximum Clock Frequency
400
kHz
µs
f
I2CCLK
Bus Free Time Between STOP
and START Conditions
1.3
0.6
t
BUF
Repeated Start (SR) Condition
Setup Time
90% to 90%
µs
t
SU:STA
HD:STA
START Condition Hold Time
STOP Condition Setup Time
Clock Low Period
10% of SDA to 90% of SCL
90% of SCL to 10% of SDA
10% to 10%
0.6
0.6
1.3
0.6
100
0
µs
µs
µs
µs
ns
ns
t
t
SU:STO
t
LOW
Clock High Period
90% to 90%
t
HIGH
Data Valid to SCL Rise Time
Data Setup Time to SCL Fall
ESD PROTECTION
Data setup time
t
SU:DAT
HD:DAT
Data hold time
t
Human Body Model
IEC61000-4-2 Air Gap
IEC61000-4-2 Contact
Human Body Model
±15
±10
±7
COMN1, COMP2, UID, BC
All Other Pins
kV
kV
±2
Note 5: All devices are 100% production tested at T = +25°C. Limits over the operating temperature range are guaranteed by
A
design.
Note 6: Not production tested. Guaranteed by design.
Note 7: The JIG assertion time is a function of the ADC debounce time. Set the ADCDbSet bits in the CONTROL3 register to adjust
this delay.
Note 8: Set the MBCCVWRC bits in the CHGCTRL3 register to adjust the battery regulation voltage, V
Note 9: The battery charge current is reduced when the die temperature reaches this limit.
BATREG.
Maxim Integrated
│ 11
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
SDA
t
BUF
t
SU:DAT
t
SU:STA
t
t
SU:STO
HD:DAT
t
t
LOW
HD:STA
SCL
t
HIGH
t
HD:STA
START
CONDITION
STOP
CONDITION
START
CONDITION
REPEATED START
CONDITION
2
Figure 1. I C Timing Diagram
Typical Operating Characteristics
(V
= 4.0V, V = 0V, T = +25°C, unless otherwise noted.)
VB A
BAT
DN1/DP2 ON-RESISTANCE
USB CHANNEL EYE DIAGRAM
UART CHANNEL EYE DIAGRAM
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
LowPwr = 0
CPEn = 1
0.5
0.5
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
T
= +85°C
A
-0.1
-0.2
-0.3
-0.4
-0.5
-0.1
-0.2
-0.3
-0.4
-0.5
T
= +25°C
A
T
= -40°C
A
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
(V)
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
TIME (ns)
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
TIME (ns)
V
COMN1/COMP2
Maxim Integrated
│ 12
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Typical Operating Characteristics (continued)
(V
= 4.0V, V = 0V, T = +25°C, unless otherwise noted.)
BAT
VB
A
UT1/UR2 ON-RESISTANCE
SL1/SR2 ON-RESISTANCE
4.0
3.6
LowPwr = 0
CPEn = 1
LowPwr = 0
CPEn = 1
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
T
= +85°C
A
T
= +85°C
A
T
= +25°C
A
T
= +25°C
= -40°C
A
T
= -40°C
A
T
A
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
(V)
-2.0 -1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
V
V
(V)
COMN1/COMP2
COMN1/COMP2
MIC ON-RESISTANCE
IDB ON-RESISTANCE
45
40
35
30
25
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
LowPwr = 0
CPEn = 1
LowPwr = 0
CPEn = 1
T
= +85°C
A
T
= +85°C
A
T
= +25°C
A
T
= -40°C
A
T
= +25°C
A
T
= -40°C
A
0
1
2
3
-2.0 -1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
V (V)
UID
V
MIC
(V)
SUPPLY CURRENT vs. V
(SFOUT ON)
VB
SUPPLY CURRENT vs. V
SUPPLY CURRENT vs. V
BAT
BAT
16
14
12
10
8
60
10
9
8
7
6
5
4
3
2
1
0
V
= V
= V = V
IO
V
= V
= V = V
IO BAT
ALL REGISTERS IN
DEFAULT CONDITION
SDA
SCL
BAT
SDA
SCL
JtaBatEn = 0
LowPwr = 0
CPEn = 0
JtaBatEn = 0
LowPwr = 0
55
50
45
40
35
30
25
20
6
4
2
0
2.5
3.5
4.5
5.5
2.5
3.5
4.5
5.5
0
10
20
30
V
BAT
(V)
V
(V)
V
VB
(V)
BAT
Maxim Integrated
│ 13
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Typical Operating Characteristics (continued)
(V
= 4.0V, V = 0V, T = +25°C, unless otherwise noted.)
VB A
BAT
SUPPLY CURRENT vs. V
(SFOUT OFF)
CHARGE CURRENT vs. V
VB
BAT
CHARGE CURRENT vs. V
(V = 5V)
VB
VB
500
450
400
350
300
250
200
150
100
50
12
500
450
400
350
300
250
200
150
100
50
ALL REGISTERS IN
DEFAULT SETTING
ALL REGISTERS IN
DEFAULT SETTING
10
8
V
= 4V
BAT
6
4
ALL REGISTERS IN
DEFAULT CONDITION
EXCEPT SFOutOrd = 0
2
0
0
0
0
10
20
30
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
(V)
0
10
20
30
V
VB
(V)
V
V
(V)
VB
BAT
SFOUT VOLTAGE vs. VB VOLTAGE
V
vs. I
SFOUT SFOUT
6
5
4
3
2
1
0
6
5
4
3
2
1
0
I
= 1mA
V
= 5.5V
VB
SFOUT
0
5
10
15
(V)
20
25
30
0
50
100
150
V
I
(mA)
VB
SFOUT
SL1/SR2 FREQUENCY RESPONSE
MIC FREQUENCY RESPONSE
20
0
20
0
LowPwr = 0
CPEn = 1
LowPwr = 0
CPEn = 1
ON-LOSS
ON-LOSS
-20
-40
-60
-80
-100
-120
-20
-40
-60
-80
-100
-120
OFF-ISOLATION
OFF-ISOLATION
CROSSTALK
CROSSTALK
0.01
0.1
FREQUENCY (MHz)
1
0.01
0.1
1
FREQUENCY (MHz)
Maxim Integrated
│ 14
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Typical Operating Characteristics (continued)
(V
= 4.0V, V = 0V, T = +25°C, unless otherwise noted.)
BAT
VB
A
IDB FREQUENCY RESPONSE
SL1/SR2 THD+N
20
0
10
LowPwr = 0
CPEn = 1
R = 50Ω
DC OFFSET = 0V
L
V
= 0.5V
COMN1/COMP2
PP
LowPwr = 0
CPEn = 1
ON-LOSS
-20
-40
-60
-80
1
0.1
OFF-ISOLATION
CROSSTALK
-100
-120
0.01
0.01
0.1
1
0.01
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (kHz)
MIC THD+N
IDB THD+N
10
1
10
1
R = 50Ω
R = 50Ω
L
L
DC OFFSET = 0V
= 0.5V
DC OFFSET = 0V
= 0.5V
V
V
UID
VB
PP
PP
LowPwr = 0
CPEn = 1
LowPwr = 0
CPEn = 1
0.1
0.01
0.1
0.01
0.01
0.1
1
10
100
0.01
0.1
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
Maxim Integrated
│ 15
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Typical Operating Characteristics (continued)
(V
= 4.0V, V = 0V, T = +25°C, unless otherwise noted.)
BAT
VB
A
DCP INSERT
SDP INSERT
MAX14616 toc22
MAX14616 toc23
ALL REGISTERS IN
ALL REGISTERS IN
DEFAULT CONDITION
DEFAULT CONDITION
VB
VB
5V/div
5V/div
D+
D+
2V/div
2V/div
D-
D-
2V/div
2V/div
20ms/div
20ms/div
DCP INSERT (CDDelay = 1)
SDP INSERT (CDDelay = 1)
MAX14616 toc24
MAX14616 toc25
ALL REGISTERS IN
DEFAULT CONDITION
EXCEPT CDDelay = 1
ALL REGISTERS IN
DEFAULT CONDITION
EXCEPT CDDelay = 1
VB
VB
5V/div
5V/div
D+
D+
2V/div
2V/div
D-
D-
2V/div
2V/div
20ms/div
20ms/div
Maxim Integrated
│ 16
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Bump Configuration
TOP VIEW
(BUMPS ON BOTTOM)
MAX14616
MAX14616A
1
2
3
4
5
+
A
V
INT
DN1
JIG
DP2
UID
IO
B
C
D
E
MIC
UR2
BAT
BAT
LED
UT1
CAP
SDA
THM
GND
COMP2
COMN1
SR2
IDB
SFOUT
VB
SCL
VB
SL1
WLP
Bump Description
BUMP
A1
NAME
FUNCTION
2
2
V
I C Reset Input. A falling edge on V causes the I C registers to reset.
IO
IO
A2
INT
DN1
DP2
Active-Low Open-Drain Interrupt Output. Connect INT to an external pullup resistor.
A3
USB D- Input/Output
USB D+ Input/Output
A4
USB ID Input. Connect UID to ID on micro-USB connector. Maximum capacitance allowed from UID to
ground is 1nF.
A5
B1
B2
UID
MIC
LED
Microphone Output
Open-Drain LED Driver. LED is controlled by the battery charger status (Table 4) or the BTLDSet bits in
the CONTROL3 register.
Factory-Mode Open-Drain Output. JIG is controlled by the internal state machine or manually
controlled by the JIGSet register bits.
B3
JIG
Internal LDO Bypass Output. Bypass CAP to GND with a 0.1µF (typ) ceramic capacitor for proper
operation. Do not use CAP to drive an external load.
B4
B5
CAP
COMP2
Common Input/Output 2. Connect COMP2 to D+ on the micro-USB connector.
Maxim Integrated
│ 17
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Bump Description (continued)
BUMP
C1
NAME
UR2
FUNCTION
UART Receiver Input/Output
UART Transmitter Input/Output
C2
UT1
USB ID Bypass. IDB is used to sense ID of the micro-USB connector for USB OTG transceivers and
the pass composite video.
C3
IDB
2
C4
C5
SDA
I C Serial Data Input/Output. Connect SDA to external pullup resistor.
COMN1
Common Input/Output 1. Connect COMN1 to D- on the micro-USB connector.
Battery Charger Output and Chip-Power Input. Bypass BAT to GND with a 2.2µF (min) ceramic
capacitor.
D1, E1
D2
BAT
Overvoltage-Protected LDO Output. Internal LDO is powered from VB. Bypass SFOUT to GND with a
1µF (min) ceramic capacitor.
SFOUT
2
D3
D4
D5
SCL
THM
SR2
I C Serial Clock Input. Connect SCL to an external pullup resistor.
Battery Presence Detection
Stereo Audio Input/Output 2
USB VBUS Input. VB provides power for internal circuitry when V
input source for the battery charger. Bypass VB to GND with a 1µF (min) ceramic capacitor.
is less than V . VB is also the
VB
BAT
E2, E3
VB
E4
E5
GND
SL1
Ground
Stereo Audio Input/Output 1
Maxim Integrated
│ 18
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Functional Diagram/Typical Application Circuit
BAT
CAP
PHONE
LOADS
0.1µF
BATTERY CHARGER
CONTROL
2.2µF
VB
1µF
SFOUT
1µF
SFOUT
LDO
V
CCINT
D-
DN1
HI-SPEED
USB
D+
DP2
VBUS
D-
Tx
Rx
UT1
UR2
COMN1
COMP2
UART
MICRO-B
USB
CONNECTOR
D+
ID
MIC
75Ω
VIDEO
BUFFER
USB
CHARGER
DETECTION
STEREO
AUDIO
DIRECT
DRIVE
LEFT
SL1
SR2
UID
12pF
RIGHT
CLICK-AND-POP
RESISTORS
MAX14616
MAX14616A
V
LOGIC
V
IO
V
VBDET
SCL
SDA
INT
SCL
SDA
INT
0.1µF
ADC
V
IO
V
SFOUT
LED
JIG
2
I C
CONTROL
THM
ADC
GND
Maxim Integrated
│ 19
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Register Map
ADDRESS
0x00
NAME
DEVICEID
INT1
b7
b6
b5
ChipID
b4
b3
b2
b1
b0
DeviceID
0x01
0
0
0
0
ADC1KI
DXOVPI
ADCErrorI ADCLowI
ADCI
0x02
INT2
0
0
0
VidRmI
BatDetI
ADCLow
DXOVP
VBVoltI
ChgEnbldI
DCDTmrI ChgDetRunI ChgTypI
0x03
INT3
0
MBCCHGERRI
OVPI
ADC
CGMBCI
EOCI
0x04
STATUS1
STATUS2
STATUS3
ADC1K
ADCError
VBVolt
0x05
VidRm
DCDTmr
ChgEnbld
0
ChgDetRun
MBCCHGERR
ADC1KM
ChgTyp
CGMBC
0x06
0
0
0
0
BatDet
OVP
EOC
0x07 INTMASK1
0x08 INTMASK2
0x09 INTMASK3
0
0
ADCErrorM ADCLowM
ADCM
0
VidRmM
BatDetM
DCDCpl
0
VBVoltM
DXOVPM
DCDTmrM ChgDetRunM ChgTypM
CGMBCM EOCM
DCDEn ChgTypMan ChgDetEn
0
ChgEnbldM MBCCHGERRM OVPM
0x0A CDETCTRL1 CDPDet
0x0B CDETCTRL2
0x0C CONTROL1 IDBEn
0
CDDelay
0
DCD2sCt
DxOVPEn
0
0
MicEn
USBCplnt
0
JtaBatEn
CPEn
VidRmEn
COMN1Sw
ADCEn
FrcChg
COMP2Sw
SFOutOrd
0x0D CONTROL2
0x0E CONTROL3
0x0F CHGCTRL1
RCPS
AccDet
SFOutAsrt
LowPwr
0
0
ADCDbSet
BTLDSet
JIGSet
TCHW
0
0
1
0
0
0
0
0x10 CHGCTRL2 VCHGR_RCMBCHOSTEN
0
1
1
0x11 CHGCTRL3
0x12 CHGCTRL4
0x13 CHGCTRL5
0x14 CHGCTRL6
0x15 CHGCTRL7
1
0
0
0
0
0
0
0
1
0
1
0
MBCCVWRC
0
MBCICHWRCL
MBCICHWRCH
1
0
1
0
EOCS
AUTOSTOP
0
0
0
0
0
0
1
OTPCGHCVS
Detailed Register Map
FIELD NAME
READ/WRITE
BITS
DEFAULT
DESCRIPTION
DEVICEID (0x00)
ChipID (MAX14616)
ChipID (MAX14616A)
DeviceID
Read Only
Read Only
Read Only
[7:3]
[7:3]
[2:0]
01110
Chip Version
Chip Version
10010
101
Device Identification
INT1 (0x01) (All bits are cleared after a read)
Bits in this register are set when associated bits in the STATUS1 register change. INT is asserted when any bit in the INT1 register is
set, unless masked in the INTMASK1 register.
Maxim Integrated
│ 20
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read Only
[7:4]
0000
Reserved
ADC 1K Detected or Removed Interrupt
0 = No change
1 = ADC1K bit has changed
ADC1KI
ADCErrorI
ADCLowI
ADCI
Read Only
Read Only
Read Only
Read Only
[3]
[2]
[1]
[0]
(Note 10)
(Note 10)
(Note 10)
(Note 10)
ADC Error Interrupt
0 = No change
1 = ADCError bit has changed
ADC Low-Bit Change Interrupt
0 = No change
1 = ADCLow bit has changed
ADC Change Interrupt
0 = No change
1 = ADC bits have changed
INT2 (0x02) (All bits are cleared after a read)
Bits in this register are set when associated bits in the STATUS2 register change. INT is asserted when any bit in the INT2 register is
set, unless masked in the INTMASK2 register.
RFU
Read Only
Read Only
[7:6]
[5]
00
Reserved
Video Cable Removal Interrupt
0 = No change
VidRmI
(Note 10)
1 = VidRm bit has changed
VB Voltage Interrupt
0 = No change
1 = VBVolt bit has changed
VBVoltI
Read Only
Read Only
Read Only
Read Only
Read Only
[4]
[3]
[2]
[1]
[0]
(Note 10)
(Note 10)
(Note 10)
(Note 10)
(Note 10)
D+/D- OVP Interrupt
0 = No change
1 = DXOVP bit has changed
DXOVPI
DCDTmrI
ChgDetRunI
ChgTypI
DCD Timer Interrupt
0 = No change
1 = DCDTmr bit has changed
Charger Detection Running Status Interrupt
0 = No change
1 = ChgDetRun bit has changed
Charger Type Interrupt
0 = No change
1 = ChgTyp bits have changed
INT3 (0x03) (All bits are cleared after a read)
Bits in this register are set when associated bits in the STATUS3 register change. INT is asserted when any bit in the INT3 register is
set, unless masked in the INTMASK3 register.
Maxim Integrated
│ 21
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read Only
[7:6]
00
Reserved
Battery Presence Detect
0 = No change
1 = BatDet bits have changed
BatDetI
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
[5]
[4]
[3]
[2]
[1]
[0]
(Note 10)
(Note 10)
(Note 10)
(Note 10)
(Note 10)
(Note 10)
Battery Charger Enable Interrupt
0 = No change
1 = ChgEnbld bit has changed
ChgEnbldI
MBCCHGERRI
OVPI
Battery Fast-Charge Timer Expire Interrupt
0 = No change
1 = MBCCHGERR has changed
VB Overvoltage Protection Interrupt
0 = No change
1 = OVP bit has changed
Charger Voltage OK Interrupt
0 = No change
1 = CGMBC bit has changed
CGMBCI
End-of-Charge Interrupt
0 = No change
EOCI
1 = EOC bit has changed
STATUS1 (0x04)
Changes in bits in this register generate an interrupt in the INT1 register.
ADC 1KΩ Resistor Detection. This bit is set when a 1kΩ or
larger resistor to ground is detected on UID.
0 = No 1kΩ on UID
1 = 1kΩ detected on UID
ADC1K
Read Only
Read Only
[7]
[6]
(Note 10)
(Note 10)
ADC Error Detection. This bit is set when the ADC cannot
converge on a value due to noise or other interference.
0 = ADC Detection Error has not occurred
ADCError
1 = ADC Detection Error has occurred
ADCLow Bit. This bit is cleared when UID is connected to
GND. ADCLow is used to detect a 75Ω video cable; a video
cable is present when ADCLow = 1 and ADC = 00000. See the
Accessory Detection section for more information.
0 = UID resistance < 30Ω
ADCLow
Read Only
Read Only
[5]
(Note 10)
(Note 10)
1 = UID resistance ≥ 30Ω
ADC Output. Any change in the ADC bits triggers an interrupt
in the INT1 register. See Table 4 in the Accessory Detection
section.
ADC
[4:0]
STATUS2 (0x05)
Changes in bits in this register generate an interrupt in the INT2 register.
Maxim Integrated
│ 22
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Video Cable Removal Detection Output. VidRmEn must to be
set to 1 and video amplifier is enabled and outputting a video
signal for correct operation of VidRm function. The load removal
can only be detected if the video amp is enabled and outputting a
video signal. The video cable removal senses the change in the
voltage drop across IDB and UID due to the presence of a video
signal if a 75Ω monitor load is connected.
VidRm
Read Only
[7]
(Note 10)
0 = Video load present
1 = Video cable load not present
VB Detection Comparator Output. This bit is set when the
VBUS voltage rises above the VB detect threshold, V
.
VBDET
VBVolt
Read Only
Read Only
[6]
[5]
(Note 10)
(Note 10)
0 = V < V
VB
VBDET
VBDET
1 = V ≥ V
VB
D+/D- OVP Flag. When DXOVP = 1, the charger detection
state machine is forced off and CHGTYP = 000 to avoid reverse
biasing from D+/D-. This flag can be asserted only when
DXOVP
V
≥ V
.
VB
VBDET
0 = V
1 = V
and V
≤ V
COMP2 CCINT
COMN1
COMN1
or V
> V
COMP2
CCINT
Data Contact Detection (DCD) Timer.
DCDTmr
Read Only
Read Only
[4]
[3]
(Note 10)
(Note 10)
0 = DCD timer is not running or is not expired
1 = DCD timer has been running for longer that 2 sec (min)
Charger Detection State Machine Status.
0 = Charger detection state machine is not running
1 = Charger detection state machine is running
ChgDetRun
USB Charger Detection Output.
000 = Nothing attached
001 = USB cable attached
010 = Charging downstream port. Charger current depends on
USB operating speed.
011 = Dedicated charger. The maximum charge current for the
port is 1.5A.
ChgTyp
Read Only
[2:0]
(Note 10)
100 = Apple 500mA charger. The maximum charge current for
the port is 500mA.
101 = Apple 1A or 2A charger
110 = Special charger (bias on D+/D-)
111 = Reserved
STATUS3 (0x06) Changes in bits in this register generate an interrupt in the INT3 register.
Maxim Integrated
│ 23
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read Only
[7]
0
Reserved
Battery Presence Monitor
00 = Battery not present
01 = Reserved
BatDet
Read Only
[6:5]
(Note 10)
10 = Battery present
11 = Reserved
Battery Charger Enable Status. This bit only indicates the
charger logic is enabled and does not indicate if the charger is
passing current. See Tables 1 and 2.
0 = Charger is not enabled
1 = Charger is enabled
ChgEnbld
MBCCHGERR
OVP
Read Only
Read Only
Read Only
Read Only
[4]
[3]
[2]
[1]
0
Battery Charger Error and Fast-Charging Timer Status. Set
the battery fast-charge timer in the CHGCTRL1 register (0x0F).
0 = Timer not expired
(Note 10)
(Note 10)
(Note 10)
1 = Timer expired
VB Overvoltage Protection Trip Level Status. Set the VB
overvoltage protection threshold in the CHGCTRL7 register
(0x15).
0 = V ≤ V
VB
OVLO
OVLO
1 = V > V
VB
Charger Power-OK Monitor. This bit is set when the VB voltage
is greater than the VBUSOK trip point voltage.
CGMBC
0 = V < V
VB
BTP
BTP
1 = V ≥ V
VB
End-of-Charge Status. This bit is set while charging a battery.
0 = Charger is in prequalification mode, fast-charge mode,
disabled, or 30-minute top-off timer has expired (AUTOSTOP = 1)
EOC
Read Only
[0]
(Note 10)
1 = Charger is in top-off mode (AUTOSTOP = 1) or I
(AUTOSTOP = 0).
< I
EOCS
BAT
INTMASK1 (0x07) Set the bits in the INTMASK1 register to mask interrupts at the INT output that are generated in the STATUS1
and INT1 registers.
RFU
Read Only
Read/Write
[7:4]
[3]
0000
0
Reserved
ADC 1K Detection Interrupt Mask
0 = Mask
ADC1KM
1 = Not masked
ADC Error Interrupt Mask
0 = Mask
1 = Not masked
ADCErrorM
ADCLowM
ADCM
Read/Write
Read/Write
Read/Write
[2]
[1]
[0]
0
0
0
ADC Low-Bit Change Interrupt Mask
0 = Mask
1 = Not masked
ADC Change Interrupt Mask
0 = Mask
1 = Not masked
Maxim Integrated
│ 24
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
READ/WRITE
BITS
DEFAULT
DESCRIPTION
INTMASK2 (0x08)
Set the bits in the INTMASK2 register to mask interrupts at the INT output that are generated in the STATUS2 and INT2 registers.
RFU
Read Only
[7:6]
00
Reserved
Video Cable Removal Interrupt Mask
0 = Mask
VidRmM
Read/Write
[5]
0
1 = Not masked
VB Voltage Interrupt Mask
0 = Mask
1 = Not masked
VBVoltM
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
[4]
[3]
[2]
[1]
[0]
0
0
0
0
0
D+/D- OVPInterrupt Mask
0 = Mask
1 = Not masked
DXOVPM
DCDTmrM
ChgDetRunM
DCD Timer Interrupt Mask
0 = Mask
1 = Not masked
Charger Detection Running Status Interrupt Mask
0 = Mask
1 = Not masked
Charger Type Interrupt Mask
0 = Mask
ChgTypM
1 = Not masked
INTMASK3 (0x09)
Set the bits in the INTMASK3 register to mask interrupts at the INT output that are generated in the STATUS3 and INT3 registers.
RFU
Read Only
[7:6]
00
Reserved
Battery Detection Interrupt Mask
0 = Mask
BatDetM
Read/Write
[5]
0
1 = Not masked
Battery Charger Enable Interrupt Mask
0 = Mask
1 = Not masked
ChgEnbldM
MBCCHGERRM
OVPM
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
[4]
[3]
[2]
[1]
[0]
0
0
0
0
0
Battery Fast-Charge Timer Interrupt Mask
0 = Mask
1 = Not masked
VB Overvoltage Protection Interrupt Mask
0 = Mask
1 = Not masked
Charger Voltage Power-OK Interrupt Mask
0 = Mask
1 = Not masked
CGMBCM
EOCM
End-of-Charge Interrupt Mask
0 = Mask
1 = Not masked
Maxim Integrated
│ 25
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
READ/WRITE
BITS
DEFAULT
DESCRIPTION
CDETCTRL1 (0x0A)
USB-Charger Downstream-Port-Detection Method Selection
0 = Use V
short test.
to drive D-. This is the reverse of the D+/D-
DP_SRC
CDPDet
RFU
Read/Write
Read/Write
Read/Write
[7]
[6]
[5]
0
0
1
1 = Use weak pullup method to detect USB CDP charger
Reserved
Data Contact Detection (DCD) Timeout Compliance Enable
0 = Timeout 2000ms (typ)
1 = Timeout 900ms (max) (DCD Timeout Compliant to USB
Battery Charger Detection Revision 1.2)
DCDCpl
Time Delay Before Charger Detection Starts After VBUS Is
Valid
0 = 0ms
1 = 500ms (typ)
CDDelay
DCD2sCt
Read/Write
Read/Write
[4]
[3]
0
1
Data Contact Detection (DCD) Interrupt Exit
Sets the device to automatically exit Data Contact Detection
when 2s interrupt is set (DCDTmr bit in the INT2 register is set).
0 = Stay in DCD until normal exit
1 = Always exit DCD when 2s interrupt is set
Data Contact Detection (DCD) State Machine Enable
This bit enables/disables the DCD state machine prior to
performing the short circuit detection on D+ and D-. When
enabled, DCD must pass before D+/D- is tested for a short. If the
DCD state machine is stuck, the DCD timer is set after 2sec (typ)
and DCDTmr = 1. DCD is skipped when DCDEn = 0 and D+/D-
short detection begins.
DCDEn
Read/Write
[2]
1
0 = Disable the DCD state machine
1 = Enable the DCD state machine
Charger Type Manual Detection
This bit allows the user to force manual charger detection. The
COMN1/COMP2 switches are open during manual charger
detection.
ChgTypMan
ChgDetEn
Read/Write
Read/Write
[1]
[0]
0
1
0 = Disabled
1 = Force a Manual Charge Detection. This bit is automatically
cleared when the detection state machine is complete.
Charger Detection Enable. This bit enables the USB charger
detection on a rising edge on VB.
0 = Disabled. USB charger detection does not occur when the
VB voltage rises.
1 = Enabled. USB charger detection occurs when V ≥ V
VB
VBDET
Maxim Integrated
│ 26
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
CDETCTRL2 (0x0B)
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read only
[7:4]
[3]
0000
1
Reserved
D+/D- OVP Monitor Enable
0 = Disabled
DxOVPEn
JtaBatEn
VidRmEn
Read/Write
1 = Enabled
Battery Detection Enable
0 = Disabled
Read/Write
Read/Write
[2]
[1]
1
0
1 = Enabled
Video Cable Load Removal Detection Enable.
0 = Disabled
1 = Enabled
Force Charger On. In case of charger detection disabled
(ChgDetEn = 0) or USB SDP with USB compliance enabled
(USBCpInt = 1), the charger is turned off when a valid USB
is present. Set FrcChg bit to 1 to force the charger to turn on.
FrcChg is reset to 0 when VBUS is removed. Other charger
controls may turn the charger off even when FrcChg = 1
(VCHGR_RC, MBCHOSTEN, AUTOSTOP, OVP, MBCCHGERR,
BatDet).
FrcChg
Read/Write
[0]
0
0 = Charger is controlled by automatic state machine
1 = Charger is forced on
CONTROL1 (0x0C)
USB ID Bypass Enable. Set to connect IDB to UID.
0 = Switch is open
1 = IDB connected to UID
IDBEn
Read/Write
Read/Write
[7]
[6]
0
Microphone Enable. Set to connect MIC to VB.
0 = Switch is open
1 = MIC connected to VB
0
MicEn
(Note 11)
COMP2 Switches Control. Set these bits to connect COMP2 to
DP2, SR2, or UR2.
000 = Switch is open
000
COMP2Sw
Read/Write
Read/Write
[5:3]
[2:0]
001 = COMP2 connected to DP2 (USB)
010 = COMP2 connected to SR2 (Audio Right)
011 = COMP2 connected to UR2 (UART RX)
100 to 111 = Switch is open
(Note 11)
COMN1 Switches Control. Set these bits to connect COMN1 to
DN1, SL1, or UT1.
000 = Switch is open
001 = COMN1 connected to DN1(USB)
010 = COMN1 connected to SL1 (Audio Left)
011 = COMN1 connected to UT1 (UART TX)
100 to 111 = Switch is open
000
(Note 11)
COMN1Sw
Maxim Integrated
│ 27
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
READ/WRITE
BITS
DEFAULT
DESCRIPTION
CONTROL2 (0x0D)
Click-and-Pop Resistors Setting. Set this bit to enable or disable
the click and pop reduction resistors on SL1 and SR2.
0 = Disabled
1 = Enabed
RCPS
Read/Write
[7]
0
USB 2.0 Compliant Setting. Set this bit if the battery charger is
USB 2.0 compliant.
0 = Not USB 2.0 compliant
USBCplnt
Read/Write
Read/Write
[6]
[5]
0
1
1 = USB 2.0 compliant
Automatic Accessory Detection Setting. This bit enables the
factory accessory detection state machine. This bit must be 0 for
manual accessory detection through firmware.
AccDet
0 = Disable factory accessory detection state machine
1 = Enable factory accessory detection state machine
SFOUT Override Control. This bit enables/disables SFOUT.
0 = Force SFOUT to off. The internal LDO is disabled and V
is 0V when this bit is 0.
1 = SFOUT is automatically controlled by the VB voltage present
and the SFOutAsrt bit.
SFOUT
SFOutOrd
Read/Write
Read/Write
[4]
[3]
1
0
SFOUT Assertion Control. Set this bit to control the period when
SFOUT turns on.
0 = SFOUT turns on after a complete run of the charger detection
state machine or after a correct detection of a factory cable.
1 = SFOUT turns on always after a valid VBUS voltage detection
with no wait.
SFOutAsrt
Charge-Pump Enable. This bit controls the charge pump required for
the analog switches operation. The factory accessory state machine will
automatically set CPEn = 1 when the analog switches are configured.
Firmware can change this bit at any time.
CPEn
Read/Write
[2]
0
0 = Disabled
1 = Enabed
ADC Enable. This bit enables or disables the internal ADC for
accessory detection.
0 = ADC disabled
ADCEn
LowPwr
Read/Write
Read/Write
[1]
[0]
1
1
1 = ADC enabled
ADC Low-Power-Mode Setting. This bit enables low-power pulse
mode for the internal ADC.
0 = Disable low-power mode
1 = Enable low-power mode
Maxim Integrated
│ 28
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
CONTROL3 (0x0E)
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read/Write
[7:6]
00
Reserved
ADC Debounce Time Setting. Set these bits to control the ADC
debounce time.
00 = 0.5ms
01 = 10ms
ADCDbSet
Read/Write
[5:4]
00
10 = 25ms
11 = 38.62ms
LED Output Setting. Set these bits to manually control the LED
output. (Note 12)
00 = LED is controlled by auto detection
01 = LED is output low
10 = LED is high impedance
BTLDSet
JIGSet
Read/Write
Read/Write
[3:2]
[1:0]
00
00
11 = LED is high impedance
Jig Output Setting. Set these bits to manually control the JIG
output. (Note 12)
00 = JIG is controlled by auto detection
01 = JIG is high impedance
10 to 11 = JIG is output low
CHGCTRL1 (0x0F)
RFU
Read Only
Read/Write
Read Only
[7]
0
Reserved
Battery Fast-Charge Timer. Set these bits to select the timer for
fast-charge mode.
010 = 5hr
011 = 6hr
100 = 7hr
TCHW
[6:4]
[3:0]
010
0100
111 = Disable the fast-charge timer.
000, 001, 101, 110 = 5hr
RFU
Reserved
CHGCTRL2 (0x10)
Wall-Adapter Rapid Charge. Set this bit to enable battery fast-
charge.
VCHGR_RC
Read/Write
[7]
1
0 = Fast-charge mode is disabled. Charger remains in
prequalification charge mode.
1 = Enable wall adapter rapid charge.
Battery Charger Host Enable. Set this bit to enable or disable
the charger. The battery charger is automatically enabled when
MBCHOSTEN = 1 and when ChgDetRun = 0 and ChgTyp = 010,
011, 100, or 101. If USBCplnt = 0, the charger is automatically
turned on when ChgTyp = 001.
MBCHOSTEN
RFU
Read/Write
Read Only
[6]
1
0 = Disabled
1 = Enabled
[5:0]
010100
Reserved
Maxim Integrated
│ 29
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
CHGCTRL3 (0x11)
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read Only
[7:4]
1010
Reserved
Battery-Charger Constant Voltage (CV) Mode. Set these bits to
control the regulated battery voltage.
0000 = 4.20V
0001 = 4.00V
0010 = 4.02V
0011 = 4.04V
0100 = 4.06V
0101 = 4.08V
0110 = 4.10V
0111 = 4.12V
1000 = 4.14V
1001 = 4.16V
1010 = 4.18V
1011 = 4.22V
1100 = 4.24V
1101 = 4.26V
1110 = 4.28V
1111 = 4.35V
MBCCVWRC
Read/Write
[3:0]
0000
CHGCTRL4 (0x12)
RFU
Read Only
Read/Write
[7:5]
[4]
000
1
Reserved
Fast Battery Charge Current-Low Bit.
Set this bit to select the fast-charge current limit for battery
charging. When this bit is 1, the charge current is defined by
MBCICHWRCH.
MBCICHWRCL
0 = 90mA
1 = 200mA to 950mA
Fast Battery Charge Current-High Bits. Set these bits to select
the fast-charge current limit for battery charging.
0000 = 200mA
0001 = 250mA
0010 = 300mA
0011 = 350mA
0100 = 400mA
0101 = 450mA
0110 = 500mA
0111 = 550mA
1000 = 600mA
1001 = 650mA
1010 = 700mA
1011 = 750mA
1100 = 800mA
1101 = 850mA
1110 = 900mA
1111 = 950mA
MBCICHWRCH
Read/Write
[3:0]
0101
Maxim Integrated
│ 30
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Detailed Register Map (continued)
FIELD NAME
CHGCTRL5 (0x13)
RFU
READ/WRITE
BITS
DEFAULT
DESCRIPTION
Read Only
[7:4]
0010
Reserved
End-of-Charge Current Setting.
Set these bits to select the current threshold level that triggers the
end-of-charge (EOC) interrupt.
0000 = 50mA
0001 = 60mA
0010 = 70mA
0011 = 80mA
0100 = 90mA
0101 = 100mA
0110 = 110mA
0111 = 120mA
1000 = 130mA
1001 = 140mA
1010 = 150mA
1011 = 160mA
1100 = 170mA
1101 = 180mA
1110 = 190mA
1111 = 200mA
EOCS
Read/Write
[3:0]
0000
CHGCTRL6 (0x14)
RFU
Read Only
Read/Write
Read Only
[7:6]
[5]
01
1
Reserved
Auto Charging Stop. See Figure 5.
0 = Disable charging shutoff.
1 = Enable charging shutoff after 30 min timer.
AUTOSTOP
RFU
[4:0]
10001
Reserved
CHGCTRL7 (0x15)
RFU
Read Only
[7:2]
[1:0]
000000
Reserved
Overvoltage Protection Threshold. Set these bits to select
the overvoltage protection threshold on VB (V
overvoltage condition, INT asserts and charging stops; however,
the MBCHOSTEN bit is not changed.
). In an
OVLO
OTPCGHCVS
Read/Write
00
00 = V
01 = V
10 = V
11 = V
is 7.5V
is 6.0V
is 6.5V
is 7.0V
OVLO
OVLO
OVLO
OVLO
Note 10: The initial power-up value of these bits is dependent of the state of the device at power-up.
Note 11: The values of these bits represent the current operating state of the part when AccDet = 1.
Note 12: The initial power-up value of the JIG output depends on the resistor present at UID.
Maxim Integrated
│ 31
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
2
Table 1. Charger Status and I C bits
CHARGER
STATUS
BatDet MBCHOSTEN VBVolt MBCCHGERR FrcChg ChgDetRun ChgTyp AUTOSTOP USBCpInt ChgEnbld
00
10
10
10
10
X
0
1
1
1
X
X
0
1
1
X
X
X
1
X
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
Off
Off
Off
Off
0
Off
0 or (1 and 30
min timer not
expired)
10
10
10
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
X
X
0
0
1
1
0
1
On
Off
On
1 and 30 min
timer expired
0 or (1 and 30
Not 001 min timer not
expired)
1 and 30 min
Not 001
10
10
1
1
1
1
0
0
0
0
0
0
1
0
0
Off
Off
timer expired
000
000
X
X
0 or (1 and 30
min timer not
expired)
10
1
1
0
1
0
X
1
On
1 and 30 min
timer expired
10
10
1
1
1
1
0
0
1
0
0
0
000
001
X
1
0
0
Off
Off
X
0 or (1 and 30
min timer not
expired)
10
1
1
1
1
0
0
1
1
0
0
001
001
1
1
1
0
On
Off
1 and 30 min
timer expired
10
X = Don’t Care
Maxim Integrated
│ 32
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
UART Switch (UT1, UR2)
Detailed Description
The MAX14616/MAX14616A support standard single-
supply UART signals. The UART channel can also be
used for Hi-Speed USB signals. The UART channel is
bidirectional and has low 3Ω (typ) on-resistance.
The MAX14616/MAX14616A contain a Li+ battery char-
ger, charger type detection block, and multiplex USB
2.0 Hi-Speed, UART, stereo audio, and a microphone
on a single micro-USB connector. This device features
an internal detection resource for determining the device
Stereo Audio (SL1, SR2) and Microphone (MIC)
2
connected and are controlled through the I C interface.
The MAX14616/MAX14616A support a stereo audio
amplifier with a mono microphone. Figure 2 shows a
typical application for a cell phone headset with a push-
button remote control (see the Accessory Detection sec-
tion) through a micro-USB connector. The MAX14616/
MAX14616A route the LEFT (SL1) and RIGHT (SR2)
channel audio to the D- (COMN1) and D+ (COMP2)
Audio inputs feature negative-rail signal operation down
to -2V (typ). The MAX14616/MAX14616A support USB
Charging Specification Revision 1.1 and include a com-
plete Li+ battery charger with adjustable maximum cur-
rent up to 950mA.
Input Sources and Routing
lines. SL1 and SR2 are negative-rail capable to V
.
SWNEG
The typical micro-USB connector has five signal lines:
USB power, two USB signal lines (D-, D+), ID line, and
ground. The USB power on the micro-USB connector
connects to VB on the MAX14616/MAX14616A. The two
USB signal lines, D-/D+, connect to COMN1 and COMP2.
The ID line connects to the UID input.
Internal 100Ω (typ) switched shunt resistors on the LEFT
and RIGHT channel speaker lines can be enabled through
the RCPS bit in the CONTROL2 register to reduce pops
and clicks heard when the audio amplifier is switched on
(See Click and Pop Reduction). The microphone signal is
routed through the VBUS line on the micro-USB connec-
tor. SL1 and SR2 can alternatively be used to route a USB
high-speed signal.
USB Switch (DN1, DP2)
The MAX14616/MAX14616A support Hi-Speed, full
speed, and speed USB signal levels. The USB channel
is bidirectional and has low 3Ω (typ) on-resistance. The
low on-resistance is stable as the analog input signals are
Composite Video with Stereo Audio
Composite video is supported by a cable with stereo
audio output on D+/D-, and composite video on ID. The
video cable is a unique case because it can be either an
ID resistor (365kΩ) for a cable that is not connected to a
swept from ground to V
for low signal distortion.
SWPOS
VBUS
MICROPHONE
D-
LEFT
SPEAKER
RIGHT
SPEAKER
D+
ID
SEND/
END
R1
R2
R11
GND
R12
Figure 2. Headset with Remote Control
Maxim Integrated
│ 33
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
TV, or a 75Ω load to ground if the cable is connected to a
TV. If the ADC reads a no-load video cable (365kΩ), then
the system may choose to either ignore this condition and
wait for 75Ω load, or indicate a GUI message to user to
connect to video display. If an ADC reading of 0b00000
(ground) is found, the ADCLow bit is read to detect the
difference between a 75Ω video load, and a ground ID pin
for a USB OTG cable. After a 75Ω load is discovered, the
video amplifier can be turned on and the IDB switch can
be closed. Before enabling the video amplifier and closing
the IDB switch, the ADC needs to be disabled (ADCEn =
0) to avoid interrupts from the video signal on the USB
ID line. The removal of the video 75Ω load is detected
using the video load removal circuit. Set VidRmEn = 1
and unmask the VidRm interrupt. After the removal is
detected, open the IDB switch, disable the video removal
detection (VidRmEn = 0) and enable the ADC. Note that
if video removal detection is active, either turning off the
video signal or removing the 75Ω load causes an interrupt
to indicate video cable removal.
SFOUT LDO Output
The SFOUT LDO provides a 4.9V (typ) output, typically
used to power a USB transceiver. SFOUT provides a
voltage-limited supply that protects the USB transceiver
from transient voltages up to 28V.
Factory Mode
Accessory detection is enabled at power-up (AccDet = 1 in
the CONTROL2 register), enabling the Factory Detection
State Machine (Figure 3). The MAX14616/MAX14616A
detect accessories in the following order of priority:
1) Four factory-mode ID resistor values (see Table 2)
2) Audio headset. The accessory is detected as either a
1MΩ resistor, or any button press resistor value when
VBUS is not present (see Table 3).
3) USB cable. A USB cable is detected when UID is
unconnected and the ChgTyp bits in the STATUS2 reg-
ister are ‘001’ or ‘010’. Charging may also be enabled
automatically when ChgTyp = 001 if USBCplnt = 0.
4) Dedicated chargers. ChgTyp bits in the STATUS2 reg-
ister are ‘011’, ‘100’, ‘101’, or ‘110’.
High-Impedance Mode for COMN1/COMP2
The MAX14616/MAX14616A allow COMN1 and COMP2
set to high-impedance (COMN1Sw and COMP2Sw = 100
to 111) to have a safe position when a headset is inserted.
If COMN1 or COMP2 are left connected to one of the
four inputs, there is a possibility of having a DC voltage
present, causing a pop when a connection is made to a
speaker.
The MAX14616/MAX14161A factory detection state
machine detects the external accessories and auto-
matically configures the internal switches and JIG out-
puts (Table 2). Set the AccDet bit to 0 to disable auto-
matic accessory detection. When automatic detection
is disabled, the internal switch states must be manually
2
controlled through the I C interface. It is recommended
Click-and-Pop Reduction
to always use software control instead of the automatic
accessory detection after the host microprocessor boots.
The MAX14616/MAX14616A support click-and-pop
reduction through the RCPS bit in the CONTROL2 regis-
ter. Set RCPS to 1 to connect 100Ω shunt resistors from
the audio inputs (SL1 and SR2) to GND to remove any
DC bias that results from AC-coupling capacitors prior to
connecting them to COMN1 or COMP2.
Accessory Detection
The MAX14616/MAX14616A support multiple accesso-
ries by detecting unique characteristics including VB volt-
age, ID resistor, and USB charger detection. See Table 3
for more information.
Disable the click-and-pop shunt resistors prior to using
the channel.
Table 2. Factory-Mode Resistor Response (R )
ID
R
JIG
LOW
COMN1
DN1
COMP2
DP2
ID
255kΩ
301kΩ
LOW
DN1
DP2
523kΩ
LOW
UT1
UR2
619kΩ
LOW
UT1
UR2
All other resistors
HIGH-Z
OPEN
OPEN
Maxim Integrated
│ 34
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
START
BOOT FROM EITHER VB OR BAT
WAIT FOR POR TIMER
IS A FACTORY
RESISTOR
ATTACHED?
IS AN AUDIO
RESISTOR
ATTACHED?
NO
NO
YES
UID RESISTOR
ATTACHED?
NO
YES
YES
CONFIGURE SWITCHES
FOR UART OR USB
CONFIGURE SWITCHES
FOR AUDIO
NO
IS V > V
?
VB
VBDET
YES
CONFIGURE JIG
AND BOOT OUTPUTS
CHARGER
DETECTION START
NO
IS A UID
RESISTOR
ATTACHED?
IS ADC = 11111
YES
YES
NO
CONFIGURE
SWITCHES FOR
USB OPERATION
YES
YES
YES
YES
STANDARD USB
FOUND?
IS USBCplnt = 1?
NO
NO
CONFIGURE
SWITCHES FOR
USB OPERATION
CDP FOUND?
NO
NO
ANY DEDICATED
CHARGER FOUND?
SET ChgTyp AND BEGIN
CHARGING IF MBCHOSTEN = 1
SET COMP2Sw = 000,
COMN1Sw = 000,
MICEn = 0, CPEn = 0
SET
ChgTyp
= 000
NO
YES
IS V < V
VB
?
VBDET
ASYNC FROM ANY
STATE IF AccDet = 0
AND GO TO EXIT
EXIT
Figure 3. Factory Accessory Detection State Machine
Maxim Integrated
│ 35
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Table 3. Accessory Detection Characteristics
ADC VALUE
ID
ADCLow
ADC1K
DESCRIPTION
RESISTOR
HEX
4
3
2
1
0
GND
75Ω
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
USB OTG
0x00
0
0
0
0
0
Video Cable with Load
1kΩ Resistor
1kΩ
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2kΩ
SEND/END Button
2.604kΩ
3.208kΩ
4.014kΩ
4.82kΩ
6.03kΩ
8.03kΩ
10.03kΩ
12.03kΩ
14.46kΩ
17.26kΩ
20.5kΩ
24.07kΩ
28.7kΩ
34kΩ
Remote S1 Button
Remote S2 Button
Remote S3 Button
Remote S4 Button
Remote S5 Button
Remote S6 Button
Remote S7 Button
Remote S8 Button
Remote S9 Button
Remote S10 Button
Remote S11 Button
Remote S12 Button
Reserved Accessory1
Reserved Accessory2
Reserved Accessory3
Reserved Accessory4
Reserved Accessory5
CEA936 Audio Mode
Phone Powered Device
TTY Converter
40.2kΩ
49.9kΩ
64.9kΩ
80.07kΩ
102kΩ
121kΩ
150kΩ
200kΩ
255kΩ
301kΩ
365kΩ
442kΩ
523kΩ
619kΩ
1000kΩ
Open
UART Cable
CEA-936A Type 1 Charger
Factory-Mode USB
Factory-Mode USB
Audio Video Cable with no Load
CEA-936A Type 2 Charger
Factory-Mode UART
Factory-Mode UART
Audio Mode with Remote
USB, Dedicated Charger or Accessory Removal
Maxim Integrated
│ 36
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Any pending interrupts due to a change in ADC value
must still be cleared by reading the INT1 register.
Interrupts
The MAX14616/MAX14616A generate an interrupt in
response to accessory insertion, removal, and to battery-
charger status changes. The STATUS1 (0x04), STATUS2
(0x05), and STATUS3 (0x06) registers are the status
bits for each interrupt source; changes of these bits set
the associated interrupt bits in the INTx registers. The
INTx registers are cleared after a read. See the Detailed
Register Map for more information.
Set the LowPwr bit to 1 to enable the ADC low-power
mode. The MAX14616 enters the ADC low-power mode
only if LowPwr = 1 and UID is not connected. The ADC
will exit this mode and resume normal operation if any
condition changes on UID.
USB Charger Detection
The MAX14616/MAX14616A detect battery charging
sources as defined in USB Battery Charging rev1.1 (USB
BC1.1) and are also able to detect charger types typically
used by Apple devices. The MAX14616/MAX14616A also
feature optional Data Contact Detection (DCD) as defined
by USB BC1.2 with a configurable timeout.
The INT1 (0x01), INT2 (0x02), and INT3 (0x03) registers
contain the interrupt source bit. INT is asserted when any
of these bits that are set unless masked in the INTMASKx
registers. Read an INTx register to clear that register and
deassert the INT output.
Each interrupt is independently maskable. Set any of
the bits in the INTMASK1 (0x07), INTMASK2 (0x08),
and INTMASK3 (0x09) registers to mask the associated
interrupts. Bits in the INTx registers are set but INT is not
asserted for masked interrupts. All interrupts are masked
by default.
The MAX14616/MAX14616A are capable of detecting
multiple USB battery charging methods include Standard
Downstream Ports (SDP), Charging Downstream Ports
(CDP), Dedicated Charging Ports (DCP), Apple 500mA,
1000mA, and 2000mA chargers, and special charger
(bias on D+/D-). Connecting a valid VBUS voltage to
VB when ChgDetEn = 1 in the CDETCTRL1 register
(0x0A) will enable automatic charger detection mode or
set the ChgTypMan bit in the CDETCTRL1 register to 1
to force a manual charge detection. After the VB detec-
tion debounce delay, the MAX14616 opens the COMN1
and COMP2 (USB D- and D+) switches and initializes
the internal state machine to detect the type of charg-
ing source connected. While in charger detection mode,
checking for battery chargers in the following order:
Detection Debounce
The MAX14616/MAX14616A include debounce timers
to avoid generating multiple interrupts at the insertion
of an accessory and for added noise and disturbance
protection. The interrupt state must be maintained for the
duration of the debounce delay before an interrupt at INT
is generated.
The ADC debounce can be changed by the ADCDbSet
bits in the CONTROL3 (0x0E) register to adjust the
debounce delay during accessory insertion and removal.
1) Either VBUS rises above the VB detect threshold or
ChgTypMan = 1. COMN1 and COMP2 switches are
opened.
Low-Power Modes
The MAX14616/MAX14616A contain multiple low-power
modes. Set the appropriate bits (CPEn, ADCEn, or
LowPwr) in the CONTROL2 register (0x0D) to enter low-
power mode.
2) DCD (Data Contact Detection). The MAX14616/
MAX14616A verify that the USB cable is fully inserted.
3) Apple charger detection, special charger detection,
(including 5V bias on D+/D- (MAX14616A only)) and
Dedicated Charging Ports (DCP) detection (Figure 4).
The CPEn bit controls the charge pump required for
proper operation of the analog switches. Set CPEn to 0
to disable the charge pump. CPEn must be set to 1 any-
time that a switch is enabled. Do not apply a negative-rail
voltage to any switch when the charge pump is disabled.
The MAX14616/MAX14616A turn on the charge pump
automatically when AccDet = 1 when the switches are
configured.
4) Standard Downstream Ports (SDP) and Charging
Downstream Ports (CDP) detection.
5) In standard operating mode, AccDet = 0. COMN1 and
COMP2 switches are returned to their previous state.
The ChgDetRun bit in the STATUS2 register (0x05) is
1 while the state machine is running. The output of the
state machine is indicated by the ChgTyp bits in the
STATUS2 register once the detection algorithm has been
completed.
ADCEn controls the internal ADC. Set ADCEn to 0 to dis-
able the ADC. In this mode, the ADC bits in the STATUS1
register are set to ‘11111,’ disabling all interrupt detection.
Maxim Integrated
│ 37
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
t
VDPSRC_
HICRNT
t
t
t
*
t
t
t
MDEB
POR
CDDELAY
MDEB
DPSRC_ON
MDEB
UVLO
VBUS
POR EXPIRED
DCD START
D+/D-
SHORT TEST
CDP TEST
SFOUT ENABLE
CHG_DET_CMP
ChgTyp
= 000
DCD PASS
D+/D-
SHORT FOUND
DEDICATED
CHARGER FOUND
ChgTyp = 011
POR LINE
ASSERTED
* t
IS THE SHORTEST TIME FOR DCD DETECTION.
MDEB
Figure 4. USB Dedicated Charger Detection Timing
of 90mA (typ). The prequalification state is complete when
≥ V
BAT Battery Charger
V
.
PRECHG
BAT
The MAX14616/MAX14616A use voltage, current, and
thermal control loops to charge a single Li+ cell and to
protect the battery (Figure 5). Set the MBCHOSTEN bit in
the CHGCTRL2 register (0x10) to enable the MAX14616
battery charger (Table 1).
Set the VCHGR_RC bit in the CHGCTRL2 register (0x10)
to disable fast-charge mode and to continue to charge a
battery with V
≥ V
with the precharge current.
BAT
PRECHG
Soft-Start
Precharge Qualification
The MAX14616/MAX14616A feature a soft-start when
entering fast-charge mode to reduce inrush current on the
input supply. After the prequalification state is complete
The MAX14616/MAX14616A feature precharge qualifica-
tion for batteries with a cell voltage less than 2.5V (typ).
When a battery with a cell voltage less than V
(V
≥ V
), charging current ramps up in 1.2ms
PRECHG
BAT
PRECHG
is connected to the MAX14616/MAX14616A, the device
(typ) to the full charging current, I
.
BAT
charges the battery with a precharge current (I
)
PRECHG
Maxim Integrated
│ 38
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
OFF
VB = 0V
= 0A
OVP = 0
EOC = 0
ASYNCHRONOUS
FROM ANYWHERE
VBVOLT = 0 OR
I
BAT
MBCHOSTEN = 0 OR
V
< V < V
VB OVLO
VBDET
ChgEnbld = 0
LED = OFF
V
<
BAT VB
AND MBCHOSTEN = 1
V
< 2.5V
BAT
V
< V < V
VB OVLO
VBDET
PREQUAL
90mA TYP
EOC = 0
ChgEnbld = 1
CGMBC = 1
LED = ON
OVP FAULT
OVP = 1
EOC = 0
ASYNCHRONOUS
FROM ANYWHERE
VB > OVLO
ChgEnbld = 0
I
= 0A
BAT
LED = BLINK
V
BAT
> 2.5V
V
< 2.5V AND 30min
BAT
FAST-CHARGE
PREQUAL TIMEOUT
I
= I
I
> I
> AND
BAT MBCICHWRCH
BAT EOCS
EOC = 0
ChgEnbld = 1
CGMBC = 1
LED = ON
FAST-CHARGE TIMEOUT
FAULT
MBCCHGERR = 1
EOC = 0
ChgEnbld = 0
I
= 0A
BAT
I
< I
BAT EOCS
LED = BLINK
AUTOSTOP = 0 AND
I
> I
BAT EOCS
EOC = 1
ChgEnbld = 1
CHARGER REMAINS ON
LED = ON (MAX14616)
LED = OFF (MAX14616A)
AUTOSTOP = 1
TOP-OFF
EOC = 1
ChgEnbld = 1
CHARGER REMAINS ON
LED = ON (MAX14616)
LED = OFF (MAX14616A)
V
<
- V
BAT
(V
)
MBCCVWRC BATRS
TOP-OFF TIMER = 30 MINUTES
DONE
EOC = 0
ChgEnbld = 0
CHARGER TURNED OFF BUT
MBCHOSTEN = 1
V
<
- V
BAT
I
= 0A
BAT
(V
)
MBCCVWRC BATRS
LED = OFF
Figure 5. Battery Charger State Machine
Maxim Integrated
│ 39
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Normal Battery Charging
Fast-Charge Timer
When a battery (V
VCHGR_RC bit in the CHGCTRL2 register (0x10) is 1,
the MAX14616/MAX14616A enter the fast-charge state
≥ V
) is connected and the
Set the TCHW bits in the CHGCTRL1 register (0x0F) to
set the maximum time the charger will operate in fast-
charge mode. The MAX14616/MAX14616A terminate
fast-charge mode when the fast-charge timer has elapsed
BAT
PRECHG
and charge the battery with a charge current, I
. Set
BAT
the MBCICHWRCL bit and the MBCICHWRCH bits in the
regardless of the V
voltage. Set the TCHW bits to ‘111’
BAT
CHGCTRL4 register (0x12) to set the fast I current
to disable the fast-charge timer.
BAT
from 90mA to 950mA. Charge current is reduced as the
battery voltage approaches the battery regulation thresh-
old, and the MAX14616/MAX14616A charger enters con-
stant voltage regulation mode to maintain the battery at
full charge. Set the MBCCVWRC bits in the CHGCTRL3
register (0x11) to set the battery regulation threshold.
Thermal Regulation
The MAX14616/MAX14616A feature thermal regulation to
limit the die temperature to 105°C (typ) during charging,
allowing a higher charge current without risking damage
to the device. When the MAX14616/MAX14616A tem-
perature exceeds the thermal regulation limit, internal
circuitry reduces the charge current, allowing the die to
cool and protecting it from overheating.
The EOCI interrupt in the INT3 register (0x03) is set and
INT asserts when the charge current falls below the bat-
tery end-of-charge threshold, indicating that the battery is
fully charged. Set the end-of-charge threshold current by
setting the EOCS bits in the CHGCTRL5 register (0x13).
Note that the EOCI interrupt is set but INT does not assert
if the battery charger enable interrupt mask bit (EOCM) in
the INTMASK3 register (0x09) is set to 0.
Battery Charger Status LED Driver
The MAX14616/MAX14616A have a LED open-drain
output that indicates the status of the battery charger
(Table 4). After the fast charge, the MAX14616 and the
MAX14616A have a different LED off operation. See
Figure 5. The LED driver can be manually controlled by
the BTLDSet control bits in CONTROL3 register (0x0E).
When the battery is fully charged, depends on the
AUTOSTOP setting, (AUTOSTOP = 0) the charger does
2
not stop and an I C write to MBCHOSTEN is required to
Battery Presence Detection
turn it off or (AUTOSTOP = 1) charging continues until the
30-minute (typ) top-off timer expires and then charging
automatically stops. During the 30-minute top-off time,
the MAX14616/MAX14616A continue to trickle charge the
battery until the top-off timer runs out.
The MAX14616/MAX14616A feature battery presence
detector. THM is connected to the pulldown resistor on
the battery pack and a pullup resistor to SFOUT. The bat-
tery presence signal is used to control the LED indicator.
The output of battery presence detector (BatDet) can be
read in the STATUS3 register (0x06).
The MAX14616/MAX14616A continue to monitor the bat-
tery voltage at BAT and restarts the fast-charge battery
If no battery is present (BatDet = 00), the battery charger
is disabled (Table 1).
mode if V
falls 150mV (typ) below the battery regula-
BAT
tion threshold for at least 62ms (typ).
Table 4. LED Output with Battery Charger Status
VBVolt
ChgEnbld
BatDet
MBCCHGERR
OVP
LED
High-Z
Low
EVENT
No VBUS
0
1
1
1
1
1
X
1
X
10
10
X
X
0
0
1
X
X
0
0
0
X
1
X
Charging
0
High-Z
Blink*
Blink*
Blink*
Charging Done**
Charging Error
OVP
X
X
X
X
00
No Battery
X = Don’t Care
*Blink rate = 1Hz, 50% duty cycle
**Either MBCHOSTEN = 0 or (AUTOSTOP = 1 and 30-minute top-off timer expired)
Maxim Integrated
│ 40
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
2
condition sent by a master, followed by the MAX14616/
MAX14616A 7-bit slave address plus R/W bit, a register
address byte, one or more data bytes, and finally a STOP
condition (Figure 1).
I C Serial Interface
Serial Addressing
The MAX14616/MAX14616A operate as a slave devices
that sends and receives data through an I C-compatible
2
Start and Stop Conditions
2-wire interface. The interface uses a serial data line
(SDA) and a serial-clock line (SCL) to achieve bidirec-
tional communication between master(s) and slave(s). A
master (typically a microcontroller) initiates all data trans-
fers to and from the MAX14616/MAX14616A and gener-
ates the SCL clock that synchronizes the data transfer.
The SDA line operates as both an input and an open-drain
output. A pullup resistor is required on SDA. The SCL line
operates only as an input. A pullup resistor is required on
SCL if there are multiple masters on the 2-wire interface,
or if the master in a single-master system has an open-
drain SCL output. Each transmission consists of a START
Both SCL and SDA remain high when the interface is not
busy. A master signals the beginning of a transmission
with a START (S) condition by transitioning SDA from high
to low while SCL is high (Figure 6). When the master has
finished communicating with the slave, it issues a STOP
(P) condition by transitioning SDA from low to high while
SCL is high. The bus is then free for another transmission.
Bit Transfer
One data bit is transferred during each clock pulse
(Figure 7). The data on SDA must remain stable while
SCL is high.
SDA
SCL
P
S
STOP
CONDITION
START
CONDITION
Figure 6. Start and Stop Conditions
SDA
SCL
DATA LINE STABLE;
DATA VALID
CHANGE OF DATA
ALLOWED
Figure 7. Bit Transfer
Maxim Integrated
│ 41
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Acknowledge
Slave Address
The acknowledge bit is a clocked 9th bit (Figure 8), which
the recipient uses to handshake receipt of each byte of
data. Thus, each byte transferred effectively requires nine
bits. The master generates the 9th clock pulse, and the
recipient pulls down SDA during the acknowledge clock
pulse. The SDA line is stable low during the high period
of the clock pulse. When the master is transmitting to
the MAX14616/MAX14616A, the master generates the
acknowledge bit because the MAX14616/MAX14616A
are recipients. When the MAX14616/MAX14616A are
transmitting to the master, the master generates the
acknowledge bit because the master is the recipient.
The MAX14616/MAX14616A have a 7-bit long slave
address. The bit following a 7-bit slave address is the
RW bit, which is low for a write command and high for
a read command. The slave address for the MAX14616/
MAX14616A have 01001011 for read commands and
01001010 for write commands (Figure 9).
Bus Reset
2
The MAX14616/MAX14616A reset the bus with the I C
start condition for reads. When the RW bit is set to 1, the
MAX14616/MAX14616A transmit data to the master, thus
the master is reading from the devices.
START
CONDITION
CLOCK PULSE FOR
ACKNOWLEDGE
1
2
8
9
SCL
SDA
BY
TRANSMITTER
SDA
BY
RECEIVER
S
Figure 8. Acknowledge
SDA
SCL
0
1
0
0
1
0
1
ACK
R/W
MSB
LSB
Figure 9. Slave Address
Maxim Integrated
│ 42
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Format for Writing
Format for Reading
A write to the MAX14616/MAX14616A comprise the
transmission of the slave address with the R/W bit set to
zero, followed by at least 1 byte of information. The first
byte of information is the register address or command
byte. The register address determines which register of
the MAX14616/MAX14616A are to be written by the next
byte, if received. If a STOP (P) condition is detected after
the register address is received, then the MAX14616/
MAX14616A take no further action beyond storing the
register address. Any bytes received after the register
address are data bytes. The first data byte goes into the
register selected by the register address and subsequent
data bytes go into subsequent registers (Figure 10). If mul-
tiple data bytes are transmitted before a STOP condition,
these bytes are stored in subsequent registers because
the register addresses auto-increments (Figure 11).
The MAX14616/MAX14616A are read using the internally
stored register address as an address pointer, the same
way the stored register address is used as an address
pointer for a write. The pointer auto-increments after each
data byte is read using the same rules as for a write.
Thus, a read is initiated by first configuring the register
address by performing a write (Figure 12). The master
can now read consecutive bytes from the MAX14616/
MAX14616A, with the first data byte being read from the
register addressed pointed by the previously written regis-
ter address (Figure 13). Once the master sounds a NACK,
the MAX14616/MAX14616A stop sending valid data.
ADDRESS = 0x4A
REGISTER ADDRESS = 0x01
0 = WRITE
S
0
1
0
0
1
0
1
0
A
0
0
0
0
0
0
0
1
A
REGISTER 0x01 WRITE DATA
S = START BIT
P = STOP BIT
A = ACK
d7
d6
d5
d4
d3
d2
d1
d0
A
P
N = NACK
d_ = DATA BIT
2
Figure 10. Format for I C Write
ADDRESS = 0x4A
REGISTER ADDRESS = 0x01
0 = WRITE
S
0
1
0
0
1
0
1
0
A
0
0
0
0
0
0
0
1
A
REGISTER 0x02 WRITE DATA
REGISTER 0x01 WRITE DATA
d7
d6
d5
d4
d3
d2
d1
d0
A
A/N
d7
d6
d5
d4
d3
d2
d1
d0
P
Figure 11. Format for Writing to Multiple Registers
Maxim Integrated
│ 43
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
0 = WRITE
REGISTER ADDRESS = 0x01
ADDRESS = 0x4A
S
0
0
1
1
0
0
0
1
0
0
1
1
0
A
A
0
0
0
0
0
0
0
1
A/N
A/N
1 = READ
ADDRESS = 0x4B
REGISTER 0x01 READ DATA
Sr
0
1
1
d7
d6
d5
d4
d3
d2
d1
d0
P
Figure 12. Format for Reads (Repeated Start)
0 = WRITE
REGISTER ADDRESS = 0x01
ADDRESS = 0x4A
S
Sr
d7
0
0
1
1
0
0
0
1
0
0
1
1
0
A
A
0
d7
d7
0
d6
d6
0
0
0
0
0
d1
d1
1
d0
d0
A/N
1 = READ
ADDRESS = 0x4B
REGISTER 0x01 READ DATA
A
0
1
1
d5
d4
d3
d2
REGISTER 0x02 READ DATA
REGISTER 0x03 READ DATA
A
A/N
d6
d5
d4
d3
d2
d1
d0
d5
d4
d3
d2
P
Figure 13. Format for Reading Multiple Registers
Power-Supply Bypassing
Applications Information
Bypass BAT to GND with a 2.2µF ceramic capacitor.
Bypass V to GND with a 0.1µF ceramic capacitor.
Bypass VB to GND with a 1µF ceramic capacitor. Place all
bypass capacitors as close as possible to the supply pins.
Hi-Speed USB
IO
Hi-Speed USB requires careful PCB layout with 45Ω
single-ended/90Ω differential controlled-impedance
matched traces of equal lengths.
Maxim Integrated
│ 44
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
2
C
< 300ns. If the transition time becomes too slow,
Choosing I C Pullup Resistors
BUS
the setup and hold times may not be met and waveforms
may not be recognized.
2
I C requires pullup resistors to provide a logic-high level
to data and clock lines. There are tradeoffs between
power dissipation and speed, and a compromise must
be made in choosing pullup resistor values. Every device
connected to the bus introduces some capacitance
even when the device is not in operation. I C specifies
300ns rise times to go from low to high (30% to 70%) for
fast mode, which is defined for a clock frequency up to
PCB Layout
The MAX14616/MAX14616A dissipate a large amount
of heat during battery charging from the internal battery
charger. Proper PCB layout is critical to remove the heat
from the die. As most of the heat is dissipated from the VB
and BAT balls, connect these balls to large copper planes
on the PCB. At least 2.5mm x 2.5mm of copper must be
used for each VB and BAT (Figure 14).
2
2
400kHz (See the I C specifications for details).
In order to meet the rise time requirement, choose pullup
resistors such that the rise time t = 0.85 x R
x
R
PULLUP
MAX14616
MAX14616A
1
2
INT
A2
3
4
5
+
V
DN1
A3
DP2
A4
UID
A5
IO
A
B
C
A1
MIC
B1
LED
B2
CAP
B4
COMP2
B5
JIG
B3
UR2
C1
UT1
C2
IDB
C3
SDA
C4
COMN1
C5
SFOUT
D2
SCL
D3
THM
D4
SR2
D5
BAT
BAT
GND
E4
SL1
E5
VB
VB
Figure 14. Recommended PCB Layout for BAT and VB
Maxim Integrated
│ 45
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Extended ESD Protection
Human Body Model
ESD protection structures are incorporated on all pins
to protect against electrostatic discharges up to ±2kV
(Human Body Model) encountered during handling and
assembly. COMN1, COMP2, and UID are further pro-
tected against ESD up to ±15kV (HBM), ±10kV (Air Gap
Discharge method described in IEC 61000-4-2) and ±7kV
(Contact Discharge Method described in IEC 61000-4-2)
without damage. The VB input withstands up to ±15kV
(HBM) if bypassed with a 1µF ceramic capacitor close to
the pin.
Figure 15 shows the Human Body Model, and Figure 16
shows the current waveform it generates when discharged
into a low impedance. This model consists of a 100pF
capacitor charged to the ESD voltage of interest that is
then discharged into the device through a 1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. However, it does not
specifically refer to integrated circuits. The major differ-
ence between tests done using the Human Body Model
and IEC 61000-4-2 is higher peak current in IEC 61000-
4-2 because series resistance is lower in the IEC 61000-
4-2 model. Hence, the ESD withstand voltage measured
to IEC 61000-4-2 is generally lower than that measured
using the Human Body Model. Figure 17 shows the IEC
61000-4-2 model, and Figure 18 shows the current wave-
form for the IEC 61000-4-2 ESD Contact Discharge test.
The ESD structures withstand high ESD both in normal
operation and when the device is powered down. After an
ESD event, the MAX14616 continues to function without
latchup.
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents test
setup, test methodology, and test results.
R
C
R
D
R
C
R
D
1MΩ
1.5kΩ
50Ω to 100Ω
330Ω
DISCHARGE
RESISTANCE
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
CHARGE-CURRENT-
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
DEVICE
UNDER
TEST
C
s
150pF
STORAGE
CAPACITOR
C
100pF
S
STORAGE
CAPACITOR
SOURCE
SOURCE
Figure 15. Human Body ESD Test Model
Figure 17. IEC 61000-4-2 ESD Test Model
I
100%
90%
I
100%
90%
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
P
R
AMPERES
36.8%
10%
0
10%
TIME
t
0
t
RL
t
R
= 0.7ns to 1ns
t
30ns
DL
CURRENT WAVEFORM
60ns
Figure 16. Human Body Current Waveform
Figure 18. IEC 61000-4-2 ESD Generator Current Waveform
Maxim Integrated
│ 46
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Ordering Information
Chip Information
PROCESS: BiCMOS
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
25 WLP
MAX14616EWA+T
MAX14616AEWA+T
Package Information
25 WLP
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
PACKAGE
TYPE
PACKAGE OUTLINE
LAND PATTERN
NO.
CODE
NO.
Refer to Application
25 WLP
W252B2+1
21-0180
Note 1891
Maxim Integrated
│ 47
www.maximintegrated.com
MAX14616/MAX14616A
Micro-USB Interface Circuit
Plus Intelligent Li+ Battery Chargers
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
12/11
Initial release
—
1, 17, 19, 20, 24, 28,
29, 30, 31, 33, 34,
36, 37, 38, 39, 40,
41, 42, 43, 45, 47
1
6/12
Added the MAX14616A to the data sheet
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2012 Maxim Integrated Products, Inc.
│ 48
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明