REJ03F0245-0200 Rev.2.00 Sep 14, 2007

Page 1 of 12

M62255FP

General Purpose Battery Charger Control IC

REJ03F0245-0200

Rev.2.00

Sep 14, 2007

Description

The M62255FP is intended to be used a general purpose battery charger control for Note PC. The M62255FP contains

the functions which are required for the battery charge control, on single chip using low peripheral component

requirement. The M62255FP can handle battery charge control, monitor battery temperature and prevent from over

current and voltage with microcomputer. It contains DC-DC converter circuit which can be used for the feedback

control of the charge current and the output voltage.

It is the best fit for Smart Battery Charger.

Features

• Built-in 3 wire serial data interface for MCU.

• Built-in multiplexer and level magnification circuit with 4 input ports.

• Built-in DC-DC converter circuit for PWM function

• Built-in two current detection circuits. These circuits can detect charge current and discharge current.

• ON/OFF control with low power dissipation mode. (Power save)

Application

Note.P.C, Video camera and general battery charger for other digital equipment

Block Diagram

Discharge current

detect circuit

Multiplexer

&

Level

magnification

circuit

Vref

Vref

SW

PS

To internal circuit

REF IN

ADJ

OSC

GND

DCDOUT

Output

drive circuit

Charge current

detect circuit

OSC

D/A

converter

Logic circuit

Output voltage

detect circuit

IN1

IN2

IN3

IN4

CS

DI

CK

Vref

Power

save

Voltage

control

OP Amp

Current

control

OP Amp

PWM

Comp

8-bit

3-bit

4-bit