MAX14690NEWX+T [MAXIM]
Wearable Charge-Management Solution;
| 型号： | MAX14690NEWX+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Wearable Charge-Management Solution |
| 文件： | 总3页 (文件大小：714K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ABRIDGED DATA SHEET
MAX14690
Wearable Charge-Management Solution
General Description
Benefits and Features
● Extend System Use Time Between Battery Charging
The MAX14690 is a battery-charge-management solution
ideal for low-power wearable applications. The device
includes a linear battery charger with a smart power
selector and several power-optimized peripherals. The
MAX14690 features two ultra-low-power buck regulators
with a typical quiescent current of 900nA. In addition,
three ultra-low power low-dropout (LDO) linear regulators,
with a typical quiescent current of 600nA are included.
In total, the MAX14690 can provide up to five regulated
voltages, each with an ultra-low quiescent current,
critical to battery life for the unique power profile in 24/7
operation devices, such as those in the wearable market.
• Dual Ultra-Low-I 200mA Buck Regulators
Q
- Output Programmable from 0.8V to 1.8V and
1.5V to 3.3V
- 0.9μA (typ) Quiescent Current
- Automatic Burst or Forced-PWM Modes
• Three Ultra-Low-I 100mA LDOs
Q
- Output Programmable from 0.8V to 3.6V
- 0.6μA (typ) Quiescent Current
- 2.7V to 5.5V Input with Dedicated Pin
● Easy-to-Implement Li+ Battery Charging
• Smart Power Selector
The battery charger features a smart power selector that
allows operation on a dead battery when connected to a
power source. To avoid overloading a power adapter, the
input current to the smart power selector is limited based
• 28V/-5.5V Tolerant Input
• Thermistor Monitor
● Minimize Solution Footprint Through High Integration
• Provides Five Regulated Voltage Rails
• Switch Mode Option on Each LDO
2
on an I C register setting. If the charger power source
is unable to supply the entire system load, the smart
power control circuit supplements the system load with
current from the battery.
● Optimize System Control
• Monitors Pushbutton for Ultra-Low Power Mode
• Power-On Reset Delay and Voltage Sequencing
• On-Chip Voltage Monitor Multiplexer
The two synchronous, high-efficiency step-down buck
regulators feature a fixed-frequency PWM mode for
tighter regulation and a burst mode for increased
efficiency during light-load operation. The output voltage
Applications
● Wearable Electronics
● Fitness Monitors
● Portable Medical Devices
2
of these regulators can be programmed through I C with
the default preconfigured.
The three configurable LDOs each have a dedicated
input pin. Each LDO regulator output voltage can be
programmed through I C with the default preconfigured.
Block Diagram
2
MAX14690
The linear regulators can also be configured to operate
as power switches that may be used to disconnect the
quiescent load of the system peripherals.
LINEAR
Li+ BATTERY CHARGER
WITH POWER SELECTOR
28V INPUT
PROTECTION
POWER
The MAX14690 features a programmable power controller
that allows the device to be configured for applications
that require the device be in a true-off, or always-on,
state. The controller also provides a delayed reset signal
and voltage sequencing.
POWER
BUCK 1
SEQUENCER
BUCK 2
MONITOR
CONTROL
LDO/SWITCH 1
LDO/SWITCH 2
The MAX14690 is available in a 36-bump, 0.4mm pitch,
2.72mm x 2.47mm wafer-level package (WLP).
DATA
SYS
LDO/SWITCH 3
Ordering Information appears at end of data sheet.
19-7480; Rev 10; 4/16
ABRIDGED DATA SHEET
MAX14690
Wearable Charge-Management Solution
Typical Application Circuit
MAX14690
CAP
THM
BAT
SET
Li+ BATTERY
CHARGER WITH
SMART POWER
SELECTOR
CHGIN
GND
1µF
1µF
1µF
EXT
SYS
VIO
VSYS
VB1
10µF
10µF
(*)
SCL
SDA
INT
SCL
SDA
B1OUT
B1LX
2.2µH
VB2
BUCK 1
INT
MPC0
MPC0
B2OUT
B2LX
CONTROL
MPC1
PFN2
RST
BUCK 2
10µF
1µF
2.2µH
VSYS
MPC1
PFN2
RST
L1IN
LDO/
SWITCH 1
PFN1
VL1
L1OUT
VSYS
LED
VSYS
VSYS
L2IN
LDO/
SWITCH 2
VL2
VL3
1µF
1µF
L2OUT
MON
MUX/
DIVIDER
MON
L3IN
LDO/
SWITCH 3
L3OUT
* OPTIONAL EXTERNAL FET
Maxim Integrated
│ 2
www.maximintegrated.com
ABRIDGED DATA SHEET
MAX14690
Wearable Charge-Management Solution
Ordering Information
Chip Information
PROCESS: BiCMOS
PART
TEMP RANGE
PIN-PACKAGE
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
36 WLP
MAX14690AEWX+
MAX14690AEWX+T
MAX14690BEWX+
MAX14690BEWX+T
MAX14690CEWX+
MAX14690CEWX+T
MAX14690DEWX+
MAX14690DEWX+T
MAX14690EEWX+*
MAX14690EEWX+T*
MAX14690HEWX+
MAX14690HEWX+T
MAX14690IEWX+
MAX14690IEWX+T
MAX14690JEWX+
MAX14690JEWX+T
MAX14690NEWX+
MAX14690NEWX+T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Package Information
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.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
Refer to
Application
Note 1891
36 WLP
W362D2+1
21-0897
+Denotes a lead(Pb)-free package/RoHS-compliant package.
T = Tape and reel.
*Future Product—contact marketing for availability.
See Table 35 and Table 36 for the device differences.
Maxim Integrated
│ 45
www.maximintegrated.com
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