DIT8545

Aug. 2002

- 1 -

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Ceratrans Driver for LCD Backlight

DIT8545 is an advanced LCD backlight inverter con-

trol IC based on the piezo-ceramic transformer. The

new control scheme employing the variable fr e-

quency and duty control achieves the very high effi-

ciency over 90%. In this control scheme, the soft

start and zero voltage switching functions are aut o-

matically obtained. DIT8545 can realize the CCFL

backlight inverter with small size and low cost.

- Soft start function

- Programmable Operating Frequency

- Analog Dimming Control Function

- Burst Dimming Control

- ON/OFF Control Function

- Open Lamp Protection

- 10SSOP Package

Device

Package

Operating Temp

DIT8545

10SSOP-225

DESCRIPTIONS

BLOCK DIAGRAM

ORDER INFORMATION

FEATURES

Bias

Generator

UVLO

Bandgap

Reference

10

9

8

7

6

1

2

3

4

5

Latch

VCC

OUT

GND

ON/OFF

PROT

TONCTL

EO

EI

RT

CT

TONCT

L

RT

CT

VFVCO

Driver