BD9285F Datasheet, PDF (13/39 Pages) Rohm – Boost 1channel white LED driver For large LCDs

BD9285F
●3.1 Application circuit example
The bellows are example circuits of using BD9285F.
・The basic application circuit example
VCC
VIN
Datasheet
VCC
TC54
UVLO
OVP
STB
RT
Css
SS
GATE
CS
FAILB
PWM1
DIMOUT
PWM2
ADIM_P
ADIM
GND
ISENSE
FB
Figure 16. The basic application circuit example
・As for the dimming signal, the single PWM and the DC for analog dimming
VCC
VIN
Figure 17. the circuit example with single PWM (1)
Css
PWM
Adim (DC)
VCC
TC54
STB
RT
SS
FAILB
PWM1
PWM2
ADIM_P
ADIM
UVLO
OVP
GATE
CS
DIMOUT
ISENSE
FB
GND
PWM1 pin and PWM2 pin are shorted.
Figure 18. the circuit example with single PWM (2)
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TSZ22111・15・001
13/36
TSZ02201-0F1F0C100030-1-2
11.Jul.2012 Rev.001