MP26028

1A Linear

Li-Ion Battery Charger with Trickle Charge

MP26028 Rev.1.01

www.MonolithicPower.com

1

10/28/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP26028 is a linear, high-performance

single cell Li-Ion battery charger. By integrating

high voltage input protection into the charger IC,

the MP26028 can tolerate an input surge up to

20V.

The device features constant current (CC) and

constant voltage (CV) charging modes with

programmable charge currents (85mA to 1A),

programmable battery full threshold, thermal

protection, reverse current blocking, and trickle

charge. The device also provides AC adapter

power good and charge status indications to the

system.

MP26028 is available in a 10-pin 3mm x 3mm

QFN package.

FEATURES

 Input Surge Up to 20V

 Adapter or USB Input

 Programmable Charge Current: 85mA to 1A

 Proprietary Constant Voltage Auto Recharge

 Proprietary Over-Voltage Protection

 <1µA Battery Reverse Current

 Over Current Protection

 AC Adapter Power Good Indicator

 Charge Status Indicator

 Programmable Soft-Start

 Programmable Charge Termination Current

Threshold

 Tiny 10-Pin QFN (3mm x 3mm) Package

APPLICATIONS

 Cell Phones

 MP3 Players

 Smart Phones

 PDAs

 Digital Cameras

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP26028

BATT

ISET

IBF

SS

GND

10

9

8

7

6

IN

CHG

ACOK

EN

1

2

3

4

5

1uF

430

Ω

R1

500k

Ω

430

Ω

R2

100k

Ω

0.1uF

1uF - 22uF

To system

+

_

20k

Ω

2.3k

Ω

3.5V - 20V

OFF

ON