BD9285F Datasheet, PDF (2/39 Pages) Rohm – Boost 1channel white LED driver For large LCDs

BD9285F
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Input voltage
STB pin voltage
OVP, UVLO, SS, RT,
ISENSE, FB, CS, TC54
pin voltage
PWM1, PWM2, FAILB,
ADIM, ADIM_P pin voltage
DIMOUT, GATE pin voltage
Symbol
Vccmax
STB
OVP, UVLO, SS, RT,
ISENSE, FB, CS, TC54
PWM1, PWM2, FAILB,
ADIM, ADIM_P
DIMOUT, GATE
Power Dissipation
Pd
Operating Temperature Range
Topr
Junction Temperature
Tjmax
Storage Temperature Range
Tstg
*1 Pd derated at 5.5 mW/℃ for temperature above Ta=25℃,
mounted on 70mm×70mm×1.6mm 1 layer glass-epoxy PCB.
●Operation range
Parameter
VCC Power source voltage
DC/DC oscillation frequency
The effective range of ADIM signal
PWM input frequency range
Symbol
VCC
fsw
VADIM
FPWM
Ratings
20
20
7
20
VCC
687 (*1)
-40 to +85
150
-55 to +150
Range
9.0 to 18.0
50 to 800
0.2 to 3.5
100 to 100k
Datasheet
Unit
V
V
V
V
V
mW
℃
℃
℃
Unit
V
kHz
V
Hz
●Pin Configuration
●Package dimension, marking diagram
OVP
1
UVLO
2
SS
3
RT
4
PWM1
5
PWM2
6
FAILB
7
ADIM
8
ADIM_P
9
18
TC54
17
CS
16
FB
15
ISENSE
14
VCC
13
STB
12
GATE
11
DIMOUT
10
GND
BD9285F
Lot No.
Figure 3-1. Pin configuration
Figure 3-2. Package dimension
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TSZ22111・15・001
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TSZ02201-0F1F0C100030-1-2
11.Jul.2012 Rev.001