BD9420F Datasheet, PDF (4/31 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter Type)

BD9420F
Datasheet
Electrical Characteristics(Unless otherwise specified VCC=24V Ta=25°C)
Parameter
Symbol
Min.
Limit
Typ.
Max.
[LED Protection Block]
LED OPEN Detect Voltage
VOPEN
0.05
0.10
0.15
LED SHORT Detect Voltage
CL Pin Low Detect Voltage
LSP Pin Pull Up Resistance
LSP Pin Pull Down Resistance
[REG75 Block]
VLSP
VCLLVP
RULSP
RDLSP
8.5
9.0
9.5
0.05
0.10
0.15
930
1550
2170
270
450
630
REG75 Output Voltage
REG75 MAX Output Current
REG75_UVLO Detect Voltage
REG75
7.425
7.50
7.575
| IREG75 |
10
－
-
REG75_TH
3.6
4.0
4.4
REG75_UVLO Hysteresis
REG75_HYS
250
500
750
REG75 Discharge Resistance
REG75_DIS
0.65
1.00
1.35
[STB Block]
STB Pin High Voltage
STB Pin Low Voltage
STB Pin Pull Down Resistance
[PWM Input Block]
STBH
STBL
RSTB
2.0
-
VCC
-0.3
-
0.8
600
1000
1400
PWM Pin High Detect Voltage
PWM Pin Low Detect Voltage
PWM Pin Pull Down Resistance
[SEL Input Block]
PWM_H
PWM_L
RPWM
1.5
-
18
-0.3
-
0.8
600
1000
1400
SEL Pin High Detect Voltage
SEL Pin Low Detect Voltage
SEL Pin Pull Down Resistance
SEL_H
SEL_L
RSEL
1.5
-
18
-0.3
-
0.8
600
1000
1400
Unit
Condition
V BSx=SWEEP DOWN
BSx=SWEEP UP,
V LSP=OPEN
V
kΩ LSP=0V
kΩ LSP=4V
V Io=0mA
mA
V REG75=SWEEP DOWN
mV
STB=ON->OFF,
REG75=SWEEP UP
MΩ
STB=ON->OFF,
REG75=7.5V
V STB=SWEEP UP
V STB=SWEEP DOWN
kΩ STB=3.0V
V PWM=SWEEP UP
V PWM=SWEEP DOWN
kΩ PWM=3.0V
V SEL=SWEEP UP
V SEL=SWEEP DOWN
kΩ SEL=3.0V
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TSZ22111 • 15 • 001
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TSZ02201-0F1F0C100300-1-2
31.Jan.2014 Rev.002