MP2671

Li-ion Battery Charger

Protection Circuit

MP2671 Rev. 0.9

www.MonolithicPower.com

1

2/23/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2009 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2671 is a high-performance single cell

Li-Ion/Li-Polymer battery charger protection

circuit. By integrating high voltage input

protection into the charger IC, the MP2671 can

tolerate an input surge up to +30V.

The

device

features

input

over

voltage

protection

(OVP),

battery

over

voltage

protection (BOVP) and over charge current

protection (OCP). The device also provides

fault indications to the system when any of the

protection events happens.

For guaranteed safe operation, the MP2671

monitors its own internal temperature and turns

off the MOSFET bridging VIN and OUT when

The MP2671 is available in 12-pin 3mm x 4mm

QFN packages.

FEATURES

• Input Surge up to 30V

• Input Over voltage protection in 1us.

• Proprietary Battery Over-Voltage Protection

• Programmable Charge Current Protection

Limit Value.

• Temperature Monitoring and Protection

• Fault Indication

• Enable Input

• 3x4mm QFN package

APPLICATIONS

• Cell Phones

• MP3 Players

• Smart Phones

• PDA

• Digital Cameras

• Desktop Chargers

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP2671

VIN

OUT

VB

EN

WRN

ILIM

GND

INPUT

BATTERY

CHARGER

BATTERY

PACK

+