MP26056DQ-Z [MPS]
Power Supply Support Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, MO-229VEED-5, QFN-10;
| 型号： | MP26056DQ-Z |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, MO-229VEED-5, QFN-10 光电二极管 |
| 文件： | 总11页 (文件大小：390K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP26056
28V, Li+Single-Cell Battery Charger
with USB/AC-Adapter Input
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP26056 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger
with dual programmable constant current set.
By integrating high voltage input protection into
the charger IC, the MP26056 can tolerate an
input surge up to 28V.
•
Complete Solution for Charging Single-Cell
Lion-Ion Battery
Input Surge Up to 28V
Dual USB/AC-Adapter Input with Auto
Charge-Current Control
Wide input operating range 3.5V to 6.5V
7V Input Over-Voltage Protection
Programmable Charge Current: 200mA to 1A
80µA Idle Current with USB Input
0.75% VBATT Accuracy over Temperature
<1µA Battery Reverse Current
Automatic die temperature limiting
Fault and Charge Status Indicators
Internal Soft-Start to limit inrush current
Tiny 3mm x 3mm QFN Package
•
•
•
•
•
•
•
•
•
•
•
•
The device features constant current (CC) and
constant voltage (CV) charging modes, reverse
current blocking and trickle charge. Other
features include the programmable battery full
threshold supporting dual AC/USB input by
automatically changing to a lower charge
current when the USB is the power supply. The
MP26056 also provides ACOK and charge
status indications to the system.
For guaranteed safe operation, the MP26056
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. Other safety features include
APPLICATIONS
•
•
•
•
•
Cell Phones
Digital Cameras
Smart Phones
PDAs
battery
temperature
monitoring
and
programmable timer to prevent prolonged
charging a dead battery.
MP3 Players
MP26056 is available in 10-pin 3mm x 3mm
QFN packages.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
3.5~6.5
VIN
GND
U1
1
10
9
LED1
Red
LED2
Green
VIN
BAT
BAT
2
3
ISET2
ACOK
GND
MP26056
8
CHG
MOD
GND
ISET1
4
5
7
6
MOD
IBF
SHDN
SHDN
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
IN to GND....................................–0.3V to +28V
ACOK & CHG Maximum Sink current……25mA
All Other Pins to GND.................–0.3V to +6.5V
Junction Temperature...............................140°C
Lead Temperature....................................260°C
Storage Temperature ..............–65°C to +150°C
Recommended Operating Conditions (2)
Nominal Supply Voltage VIN............ 3.5V to 5.5V
Operating Temperature .............–40°C to +85°C
1
2
3
4
5
10
9
8
7
6
Thermal Resistance (3)
3x3 QFN10 .............................50...... 12... °C/W
θJA
θJC
Part Number*
Package
QFN10
(3mm x 3mm)
MP26056DQ
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
Temperature
Top Marking
W7YW
–40°C to +85°C
3) Measured on JEDEC51-7 4 layer board.
For Tape & Reel, add suffix –Z (e.g. MP26056DQ–Z)
For RoHS compliant packaging, add suffix –LF
(e.g. MP26056DQ–LF–Z)
*
ELECTRICAL CHARACTERISTICS
VIN = 5V, VEN = 0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
MOD = High, SHDN = Low,
ICHG = 0A
80
Idle Current
ISUPPLY
µA
MOD = LOW, SHDN = Low,
500
7.0
ICHG = 0A
Input Over-Voltage
Protection
OVP VIN Rise
6.8
7.2
V
OVP Hysteresis
400
mV
V
Battery Voltage Regulation
VBATT T = –5°C to +75°C, IBATT = 0
VIN = 5V, VBATT = 3.8V
4.16
475
4.20
4.24
585
AC Constant Current
Regulation
ICHG
R
ISET1 = RISET2 = 3.2kΩ,
525
268
100
mA
mA
MOD=LOW
VIN = 5V, VBATT = 3.8V
RISET1 = RISET2 = 3.2kΩ,
MOD=HIGH
USB Constant Current
Regulation
ICHG
246
87
297
113
VIN = 5V, VBATT = 3.8V,
TJ = 0°C to +120°C,
(4)
Constant Current Variation
%ICHG
ICHG = 0.2A – 1A
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
2
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5V, VEN = 0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Battery Full Programming
Range
Refer to Operation section for
(4)
IBF
10
50
%ICHG
programming IBF
Input rising
(5)
IBF Accuracy
75
125
7.3
%IBF
V
6.7
7
400
2
Input ACOK Up Range
Input ACOK Up Range
Hysteresis
mV
Input rising
1.5
2.5
V
Input ACOK Low Range
Input ACOK Low Range
Hysteresis
200
8.2
mV
Protection Error Voltage
SHDN Trip Threshold High
SHDN Trip Threshold Low
Mod Trip Threshold, High
Mod Trip Threshold, Low
VZ
V
V
V
V
V
2.6
2.6
0.4
0.4
CHG , ACOK Sink Current
Pin Voltage = 0.4V
8
mA
Battery Reverse Current to
BATT Pin
SHDN = Low and Input =
Floating or 0V
1
µA
VBATT = 3.8V, RCHG = 6kΩ.
Current drop 10%
V
VIN-VBATT
VRECHARGE
Dropout Voltage
0.25
4.0
Recharge Threshold
Voltage
3.9
4.1
V
Soft Thermal Shutdown
Threshold
105
120
135
°C
Soft Thermal Shutdown
Hysteresis
10
10
°C
Internal Soft-Start Time
From trickle to 90% of full current
ms
Notes:
4) ICHG is the target preprogrammed charge current (Die temperature below 110°C).
5) IBF is the target preprogrammed battery full current threshold
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
3
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
PIN FUNCTIONS
Pin #
Name
Description
1
2
IN
Input Supply Pin. IN receives the AC adapter or USB supply voltage.
Open-Drain OVP Indicator. This pin is low when 3.5V < VIN < 6.5V.
ACOK
CHG
Open-Drain Charge Indicator. This pin is low during charging, is High after battery full or
termination,
3
4
5
6
7
8
USB input enable pin. Active High. Used to reduce charge current when USB is the
supply.
MOD
GND,
Exposed Pad
Ground. Exposed Pad must be connected to GND plane.
Charger IC Enable. An input “Low” signal at this pin or if the pin is floating will enable
the IC. An input “High” will disable the IC.
SHDN
IBF
Charge Status Threshold Program. Connect this pin to an external resistor to program
the charge termination current or battery full indication threshold. IBF=1.7/Rbf
USB Constant Charge Current Program pin. Connect this pin to an external resistor to
program the charging current in CC Mode. ICHG=1.7/Rset1 when Mod=HIGH
ISET1
Additional Constant Charge Current Program pin for AC input. Connect this pin to an
external resistor to program the charging current in AC Mode. ICHG =1.7/(Rset1// Rset2)
when Mod=LOW
9
ISET2
BATT
10
Charger Output.
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
4
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
TYPICAL PERFORMANCE CURVES
CIN=4.7uF, COUT=2.2uF, VIN=5V, TA =25ºC, unless otherwise noted.
AC Adapter Input Charge Curve
USB Input Charge Curve
Constant Voltage Charge
900
800
700
600
500
400
300
200
100
0
4.5
450
400
350
300
250
200
150
100
50
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
4.220
4.210
4.200
4.190
4.180
4.170
4.0
VBAT
VBAT
3.5
ICHG
3.0
2.5
2.0
1.5
1.0
0.5
0.0
I
CHG =0.2A
VSTATUS
ICHG =0.8A
ICHG
I
CHG =0.5A
VSTATUS
0
0
40
80
120
160
200
0
30
60
90 120 150 180
0
200
400
600
800 1000
TIME (Min)
TIME (Min)
ICHG (mA)
Battery Sink Current
I_V Charge Curve
Constant Current Charge
V
= GND
IN
V
= 5V
V
= 3.8V
BAT
IN
1.5
1.2
0.9
0.6
0.3
0
1200
1000
800
600
400
200
0
1000
800
600
400
200
0
ICHG =0.8A
Dropout
Thermal Protection
I CHG =0.8A
ICHG =0.5A
ICHG =0.5A
ICHG =0.2A
ICHG =0.2A
1.0
1.7
2.4
3.1
3.8
4.5
4.0 4.5 5.0 5.5 6.0 6.5 7.0
2.0
2.5
3.0
3.5
4.0
4.5
VBAT ( V )
VIN ( V )
VBAT ( V )
Shut Down Current
R
Resistance vs. I
SET SET
VSHDN=2.8V
40
32
24
16
8
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
0
200
400
600
800 1000
4.0 4.5 5.0 5.5 6.0 6.5 7.0
VIN ( V )
ISET (mA)
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
TYPICAL PERFORMANCE CURVES (continued)
CIN=4.7uF, COUT=2.2uF, VIN=5V, TA =25ºC, unless otherwise noted.
Constant Voltage Charge vs.
Temp
Thermal Protection
VCE=VIN-VBAT
VIN=5V,ICHG=60mA
1200
4.250
4.230
4.210
4.190
4.170
4.150
570
560
550
540
530
520
1000
800
600
400
200
-40
-10
20
50
80
110
-40
-10
20
50
80
110
1.0
2.0
3.0
4.0
5.0
6.0
VCE ( V )
VSD=0.78V
V
V
V
IN
IN
IN
5V/div.
5V/div.
5V/div.
VSD=2.44V
V
V
V
SD
SD
CHG
2V/div.
2V/div.
5V/div.
V
V
BAT
BAT
5V/div.
5V/div.
V
BAT
2V/div.
I
I
I
CHG
CHG
CHG
0.5A/div.
0.5A/div.
0.5A/div.
4ms/div.
V
IN
V
V
IN
IN
5V/div.
5V/div.
CHG
5V/div.
5V/div.
V
V
CHG
5V/div.
V
CHG
5V/div.
V
V
BAT
V
BAT
BAT
2V/div.
2V/div.
2V/div.
I
CHG
I
I
CHG
CHG
0.1A/div.
0.5A/div.
0.2A/div.
20ms/div.
20ms/div.
2ms/div.
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
6
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
BLOCK DIAGRAM
V
IN
IN
C
IN
1
ISET2
9
BATT
CHG
I
RSET2
BATT
10
3
+
V
C
BATT
OUT
MOD
IBF
_
8.2V
8.2V
4
7
8
BATTERY
CHARGE
CONTROL
R
BF
ACOK
2
ISET1
R
SET1
SHDN
5
6
GND
EN
ON
OFF
Figure 1—Functional Block Diagram
OPERATION
Input Voltage Range
used as supply, please refer to the follow section
for auto recharge operation.
The MP26056 has built-in input voltage surge
protection as high as +28V. The charger IC will
be automatically disabled when the input voltage
is lower than 3.0 or higher than 7.0V. The open-
IBAT
AC Adapter Input
drain pin ACOK is used to indicate an input
power good condition (i.e. 3.5V<VIN<6.5V). If the
input voltage is lower than the battery voltage,
the IC is also disabled to prevent the battery from
draining.
C.V Charging
USB Input
Charge Cycle (Mode Change: CC to CV)
IBF
IBF
Figure 2 below shows the typical charging profile
for the MP26056. The MP26056 will start with the
Constant Current charge of the programmed
value (ICHG) based on Rsetx. This is referred to as
Constant Current (CC) mode. Once the battery
voltage reaches 4.2V, the charger will operate in
the constant voltage (CV) mode until the battery
is fully charged. The charge current drops during
CV mode, and the battery full indication is set
when the charge current reduced to the preset
value based on RIBF, but the charger keeps
charging the battery until battery reach 4.2V
when AC adaptor is used as supply. If USB is
VBAT
4.2V
Figure 2—MP26056 Typical Charging Profile
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
7
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
Charge Status Indicator (CHG)
may draw a very narrow current pulse that
exceeds the IBF threshold. The CHG indicator
may glitch. It is desirable to blank the CHG glitch
so that the system can properly indicate full
charge conditions to the end user.
A simple solution is to add a RC filter on the CHG
pin to filter out the possible CHG glitch, as show
in Figure 3.
The MP26056 has an integrated charge status
pin that remains low while the battery is charging.
Once the charge current has reduced to the
battery full charge current threshold (IBF), the
CHG pin will become high impedance.
Under full charge conditions, certain systems
ACOK
R6
CHG
C6
R1
R2
1
VIN
IN
10
VBAT
BAT
C2
NS
C1
MP26056
9
8
ISET2
6
4
7
SHDN
MOD
SHDN
MOD
IBF
C4
R4
R5
ISET1
R3
Figure 3—Filtered Charge Status with GPIO Connection
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
8
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
Charge termination in USB mode
pin CHG is used to indicate charging status.
When the battery full condition is reached or any
other condition prevents the charger from
The charge current will gradually decrease in CV
mode as the battery approaches full. The battery
full threshold can be programmed by connecting
a resistor from IBF pin to ground. When the
charge current reaches this threshold, the
charger current will be turned off. The battery
voltage may decay after termination due to self
discharge or system draw current from the
battery.
charging, CHG will become a floating.
Thermal Protection
The MP26056 has proprietary thermal protection
to prevent the IC from overheating. When in
thermal protection mode, the charge current
becomes a saw-tooth waveform instead of a DC
current. The average current of the saw-tooth
waveform will be lower than the programmed DC
charge current to prevent the IC from
overheating. Operating in thermal protection
mode will slow down the charging process.
Lowering the input voltage and enhancing
thermal dissipation to the environment can
effectively prevent the IC from going into thermal
protection mode.
Automatic Recharge in USB mode
Upon VBATT drops to 4.0V, the charger will
automatically restart the charge cycle until the
IBF condition is met again. When the input is
unplugged or the charger is disabled and/or
terminated, the leakage current from the battery
to MP26056 is less than 1uA.
Programming of Charge Current and Battery
Full Current
The charge current (ICHG) is set by resistors
(RSETX) connecting from the ISETX pin to GND. The
relationship of the charge current and the
programming resistance is established by
following equations.
1Ax1.7kΩ
ICHG
=
(MOD= High, for USB)
RSET1
1Ax1.7kΩ
RSET1 //RSET2
ICHG
=
(MOD=Low, for AC Adapter)
It is highly recommended to program the charge
current within 0.2A to 1A. The battery full charge
current threshold (IBF) is programmed by
connecting a resistor RBF from the IBF pin to
GND:
1A ×1.7kΩ
IBF
=
RBF
The selection of RBF value should meet the
condition, 0.1ICHG < IBF < 0.6 ICHG. The open-drain
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
9
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
APPLICATION
MP26056 Flow Chart
Power-On Reset (POR) feature can be applied
To the MP26056 to ensure that the device starts
Operating in a known state. The flow chart in
Figure 4 describes the conditions and operation
Modes of the MP26056 CVC and CCC stand for
“constant voltage charge” and “constant current
charge”, respectively.
POR
NO
VIN>VUVLO
?
YES
NO
RCHG
Set up
Charging
Set up?
YES
CHG LED “ON”
VBAT>4.18V
Which
Charge Mode?
VBAT<4.18V
C.V.C
C.C.C
NO
ICHG<IBF
Battery Full?
YES
YES
TJ>130°C?
Protection
TJ<120°C?
YES
CHG LED Off
NO
NO
Short
YES
Circuit?
USB or
Adaptor
Input?
MOD “High”
MOD “Low”
NO
NO
VBAT>4.18V?
Termination
YES
NO
YES
VBAT<4.0V?
Figure 4-Operation Flow Chart
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
10
MP26056- 28V, LI+SINGLE-CELL BATTERY CHARGER WITH USB/AC-ADAPTER INPUT
PACKAGE INFORMATION
QFN10 (3mm x 3mm)
2.90
3.10
0.30
0.50
1.45
1.75
PIN 1 ID
SEE DETAIL A
PIN 1 ID
MARKING
0.18
10
1
5
0.30
2.25
2.55
2.90
3.10
PIN 1 ID
INDEX AREA
0.50
BSC
6
TOP VIEW
BOTTOM VIEW
PIN 1 ID OPTION A
R0.20 TYP.
PIN 1 ID OPTION B
R0.20 TYP.
0.80
1.00
0.20 REF
0.00
0.05
SIDE VIEW
DETAIL A
NOTE:
2.90
1.70
1) ALL DIMENSIONS ARE IN MILLIMETERS.
0.70
0.25
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VEED-5.
5) DRAWING IS NOT TO SCALE.
2.50
0.50
RECOMMENDED LAND PATTERN
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MP26056 Rev. 0.91
3/30/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
11
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