DIT8545
Ceratrans Driver for LCD Backlight
DESCRIPTIONS
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.
FEATURES
- Soft start function
- Programmable Operating Frequency
- Analog Dimming Control Function
- Burst Dimming Control
- ON/OFF Control Function
- Open Lamp Protection
- 10SSOP Package
ORDER INFORMATION
Device
DIT8545
Package
10SSOP-225
Operating Temp
-25
O
C ~ +85
O
C
BLOCK DIAGRAM
CT
VCC
UVLO
1
RT
CT
RT
10
OUT
2
EI
VFVCO
Driver
9
GND
TONCT
L
3
Error Amp
8
Bandgap
Reference
Bias
Generator
Latch
EO
ON/OFF
4
TONCTL
7
PROT
5
6
Aug. 2002
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