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HT7945 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

Part # HT7945
Description  White LED Backlight Driver
PDF  11 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT7945 Datasheet(HTML) 2 Page - Holtek Semiconductor Inc

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Rev. 1.00
2
April 13, 2012
HT7945
Block Diagram
Slope
Compensation
Control
Logic
1MHz/500kHz
Oscillator
Current
Limit
5.2V LDO
Over temperature
Protection
Over voltage
Comparator
1.28V
Error Amp.
PWM
Comparator
Driver
VREF = 0.8V
COMP
PGND1.2.3
LX1,2
OVP
IN
EN
AGND1.2
M1
Current Sense
OSC
UVLO
VREF
LED1
Current Source
Current Source
Current Source
Current Source
LED2
LED7
LED8
Min voltage
selector
LED
open/short
detector
LED1
LED1
LED8
LED8
Fault1
LED
open/short
detector
Fault8
Fault1
Fault2
Fault7
Fault8
ISET
Soft-start
AVDD
VREF
0.6V
DIM
Phase Shift
&
PWM
Controller



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