MP26121

28V, 1A Li + Linear Battery Charger

with 10% Battery-Full Threshold

and Flexible NTC Interface

MP26121 Rev. 0.9

www.MonolithicPower.com

1

9/15/2008

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2008 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP26121 is a linear, high-performance

single cell Li-Ion/Li-Polymer battery charger. By

integrating high voltage input protection into the

charger IC, the MP26121 can tolerate an input

surge up to +28V.

The device features constant current (CC) and

constant voltage (CV) charging modes with

programmable charge currents (200mA to 1A),

current blocking, and trickle charge. The device

also

provides

fault

and

charge

status

indications to the system.

For guaranteed safe operation, the MP26121

reduces charge current when the device

reaches high temperature (due to limited PCB

space). Other safety features include battery

temperature monitoring and programmable

timer to complete the charging cycle.

The MP26121 is available in 10-pin 3mm x

3mm QFN packages.

FEATURES

• Interfaces to Many NTC Resistor Values

• Programmable Charge Current up to 1A

• 1% Voltage Accuracy

• 10% Battery-Full Threshold

• No Reverse Blocking Diode Required

• Intelligent Thermal Management

• Trickle Charge

• 7V Input OVP

• Auto Recharge

• Charge-Timer

• Fault and Charge Status Indicators

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