BD6142AMUV Datasheet, PDF (25/28 Pages) Rohm – White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type)

BD6142AMUV
2. Analog Dimming and monitoring FAULT terminal
LED current: 20mA (ISET = 36kΩ)
LED: 10 LEDs in series, 8 strings in parallel
Technical Note
7V to27V
3V to 5V
10µF
10µH
30kΩ
monitor
VOUT
10 serial x 8 parallel (80pcs)
2.1V to VIN
RESET
1kΩ
22nF
GND PGND
2.2µF/50V
2.2µF
LX LX
Enable
PWM
FA ULT
VIN
VDC
O VP
2.2MΩ
68kΩ
BD6142AMUV
CO MP
CH1
CH2
CH3
CH4
CH5
CH6
CH7
PGND PGND ^GND
TEST FSET ABC _ISET
CH8
56kΩ
36kΩ
20mA
1nF
Max 0.9V
D/A
Fig. 39 Application example of Analog dimming
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2011.07 - Rev.A