BD9421F_15 Datasheet, PDF (5/31 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter Type)

BD9421F
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin Name
REG75
N
PGND
CS
FB
VREF
BS1
BS2
BS3
BS4
BS5
BS6
CL6
CL5
CL4
CL3
CL2
CL1
PWM
OVP
RT
AGND
STB
VCC
Function
7.5V regulator output for N output pin
DC/DC switching output pin
Power GND
DCDC external NMOS current monitor pin
DCDC phase-compensation pin
LED voltage setting pin
PNP Tr Base connecting pin1
PNP Tr Base connecting pin2
PNP Tr Base connecting pin3
PNP Tr Base connecting pin4
PNP Tr Base connecting pin5
PNP Tr Base connecting pin6
PNP Tr collector ・current detection pin6
PNP Tr collector ・current detection pin5
PNP Tr collector ・current detection pin4
PNP Tr collector ・current detection pin3
PNP Tr collector ・current detection pin2
PNP Tr collector ・current detection pin1
Dimming signal input pin
Overvoltage protection detection pin
DCDC frequency setting resistor connection pin
Analog GND
Enable pin
Power supply pin
Datasheet
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TSZ22111 • 15 • 001
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TSZ02201-0F1F0C100310-1-2
25.Sep.2015 Rev.003