MP2631 Datasheet: Linear Battery Charger





MP2631 Linear Battery Charger Datasheet

Part Number MP2631
Description Linear Battery Charger
Manufacture MPS
Total Page 9 Pages
PDF Download Download MP2631 Datasheet PDF

Features: The Future of Analog IC Technology MP26 31 28V, 1A, Li-lon, Linear Battery Char ger with 10mA High Voltage LDO DESCRIP TION The MP2631 is a linear, high perfo rmance single cell Li-Ion or Li-Polymer battery charger with 10mA LDO. By inte grating high voltage input protection i nto the charger IC, the MP2631 can tole rate an input surge up to 28V. The inte rnal 5V LDO can be used as a system wat chdog supply to monitor charge status. The LDO is ON when the input voltage is greater than 3V and less than 7V, and remains ON when the MP2631 is in SHDN m ode. When input is higher than 7.0V, th e LDO output will be cut off from the i nput. When input is lower than 5V, the LDO will work in the dropout region. Th e device features constant current (CC) and constant voltage (CV) charging mod es with programmable charge current (20 0mA to 1A), auto-recharge and trickle c harge. MP2631 provides ACOK and charge status indications to the system. The O VP circuitry will automatically disconnect both charger and LDO.

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The Future of Analog IC Technology
MP2631
28V, 1A, Li-lon, Linear Battery Charger
with 10mA High Voltage LDO
DESCRIPTION
The MP2631 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger
with 10mA LDO. By integrating high voltage
input protection into the charger IC, the
MP2631 can tolerate an input surge up to 28V.
The internal 5V LDO can be used as a system
watchdog supply to monitor charge status. The
LDO is ON when the input voltage is greater
than 3V and less than 7V, and remains ON
when the MP2631 is in SHDN mode. When
input is higher than 7.0V, the LDO output will be
cut off from the input. When input is lower than
5V, the LDO will work in the dropout region.
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge current (200mA to 1A),
auto-recharge and trickle charge. MP2631
provides ACOK and charge status indications to
the system. The OVP circuitry will automatically
disconnect both charger and LDO from input
when VIN exceeds 7V.
For guaranteed safe operation, the MP2631
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. MP2631 is available in 10-pin 3mm
x 3mm QFN package.
FEATURES
Complete Solution for Charging Single-Cell
Li-Ion Battery
Input Surge Protection Up to 28V
5V LDO output
3V to 7V Input Operating Range
Programmable Charge Current: 200mA to 1A
Termination and auto-recharge
0.75% VBATT Accuracy over Temperature
<1µA Battery Reverse Current
Automatic die temperature limiting
Fault and Charge Status Indicators
External Soft-Start to Control Inrush Current
3mm x 3mm QFN Package
APPLICATIONS
Cell Phones
Digital Cameras
Smart Phones
PDAs
MP3 Players
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION CIRCUIT
5-6.5V
VIN
GND
ACOK
CHG
SHDN
C1
35V
LED1
Green
R1
1K
R2
1K
LED2
Red
C3
NS
U1
1
IN
LDO 10
MP2631DQ
2
SS
BAT 9
C6
3
ACK
C5
NS
4
CHG
8
ISET
7
NC
6
SHDN
GND 5
R3 R4 R5
1.96K 3.09K 7.68K
1% 1% 1%
JP1 JP2 JP3
LDO
BAT
GND
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
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