APM8600

SINGLE CELL LINEAR LITHIUM BATTERY CHARGER

WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER

APM8600

Document number: DS35140 Rev. 1 - 2

1 of 14

www.diodes.com

December 2010

© Diodes Incorporated

Description

The APM8600 is a linear Li-Ion charger for portable

equipment

that

is

optimized

for

small

form-factor

applications.

The charge algorithm in the APM8600 covers all the charge

requirements for a single Li-Ion battery cell. Included is pre-

charging for deeply discharged cells, constant current /

constant voltage fast charging and a top-off feature to bring

the cell safely to a full-charge level.

The battery is constantly monitored for overvoltage, charge

time and cell temperature to ensure safe charging. A fault is

triggered once the charge time exceeds a value that is

programmable using a single capacitor and the temperature

measurement is achieved through a thermistor positioned

close to the battery cell.

The APM8600 is packaged in U-DFN3030-14 package with

a thermal pad.

Applications

•

Handheld Consumer Devices

•

Cell Phones, PDAs, MP3 Players

•

Handheld Test Equipment

•

Digital Still Cameras

•

Multimedia players

Pin Assignments

Figure 1 Pin Out

Features

•

Linear Lithium Ion / Lithium Polymer charging IC

•

Supply input safe up to 28V

•

Fast charging with maximum current of 1A

•

Resistor-programmable charging current

•

Resistor programmable end-of-charge

•

Capacitor programmable charge timer

•

Three charge indicator pins for a status display

•

Thermal protection

•

DFN3030-14: Available in “Green” Molding Compound

(No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 1)

Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS

exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html

.

Typical Application Circuit

Figure 2. Typical Application Circuit