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M62295GP

LCD Back-light Control IC

Renesas Electronics 

M62295GP

LCD Back-light Control IC

REJ03D0856-0201

Rev.2.01

Nov 14, 2007

Description

M62295GP is a semiconductor integrated circuit designed for PC back-light control, which employs 2 output totempole

output circuit specifically suitable for inverter drive with piezo device.

Such necessary functions as light control, protection circuit are housed in 16-pin SSOP package. This allows for

simplified peripheral circuit as well as compact and thin set design.

Features

• Direct drive to n-ch/p-ch MOSFET

• Fixed output duty: 45%

• Output current (peak): ±300 mA

• Light control

 Pulse synchronous control

Output OFF period is adjusted synchronous with the OSC frequency. (1 kHz-200 kHz)

 Light control available from 10% (Min.) up to 100% by the voltage applied from outside. (Adj2 terminal)

• Protection functions

 2 kinds of timer-latch time setting available by 3 triggers

(few seconds, several tens of seconds set by external capacitor)

Application

LCD Back-light control for Note P.C etc.

Block Diagram

Vref 5

Ref. volt

+

−

IN− 9

−

+

1.25 V

VCC

15

UVLO

+

−

2.5 V

−

+

0.25 V

2

10

GND FB

P/C

14

ON/OFF

+

−

−

+

RT CT1

11 12

OSC.

CT2

13

VCC

1 G2

VCC

Protection circuit

(Timer latch)

6

7

8

Cscp1 Cscp2 Iscp

3

4

N.C Adj2

16 G1

REJ03D0856-0201 Rev.2.01 Nov 14, 2007

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