M62240FP 查看數據表（PDF） - Renesas Electronics

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M62240FP

Single Chip Battery Charger Control IC

Renesas Electronics 

M62240FP

Single Chip Battery Charger Control IC

REJ03F0239-0200

Rev.2.00

Sep 14, 2007

Description

The M62240FP is a general purpose battery charger control IC. It can control all of the sequence needed for battery

charging, it also has functions such as detection of battery temperature, a protection against over-current/voltage, a

safety timer and so on. Moreover, it can adapt to charge Ni-Cd, Ni-MH batteries by adding few peripheral components.

The IC has the feedback control of the charge current and output voltage.

Features

• Low voltage (3 V) operation

• Built-in following functions and circuits;

 CR oscillator for internal logic

 Initialization timer and safety timer for ∆V error detection and over-charging

 D/A converter and shift registers to maintain the peak voltage of battery

 Main output SW driving circuits

 LED driving circuit for displaying the status of the charging

 System reset circuit for detecting the power supply voltage

 Temperature detection circuit for the Ni-MH battery

 Voltage and current control circuits for feedback to the primary side of the SMPS.

 Protective functions including detection of over-voltage in charge mode and over-current in adapter mode and so on

Application

Battery charger for video cameras and handheld telephones, etc.

Block Diagram

VCC Vref1 Vref2

17

2 13

SYSTEM

RESET CHT.

STABLED

PWR. SUP.

VDET IDET

16

18

LED

3

LED

DRIVER

Chg SW

6

OUTPUT

SW DRIVER

P.C 15

ISET1 20

ISET2 1

7

GND

+

−

VOLTAGE

SET-UP CKT.

+

−

CURRENT

SET-UP CKT.

CONTROL LOGIC

8 Batt SW

9 VTR SW

OVER-CURRENT

DET. CKT.

BATTERY TEMP

DET. CKT.

14 Batt T

CLOCK

OSCILLATOR GEN. CKT.

TEST

CKT.

−∆V ERROR DET.

PREV. LOGIC

BATT. VOLTAGE

DET. CKT.

11 Batt+

12 Batt−

4

5

Rc Cc

10

19

TEST OC SET

REJ03F0239-0200 Rev.2.00 Sep 14, 2007

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