BD9483F Datasheet, PDF (4/32 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter type)

BD9483F,FV
Datasheet
●1.2 Electrical Characteristics 2(Unless otherwise specified, Ta=25°C，VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
【LED protection block】
LED OCP detect voltage
MAX duty detect voltage
【Dimming block】
VLEDOCP
2.88
3.0
3.12
VFBMAX
3.84
4.0
4.16
ADIM pin leak current
ISENSE pin leak current
DIMOUT source on-resistance
ILADIM
-2
IL_ISENSE
-2
RONSO
4.0
0
2
0
2
8.0
16.0
DIMOUT sink on-resistance
【REG90 block】
RONSI
2.5
5.0
10.0
REG90 output voltage
REG90 available current
REG90_UVLO detect voltage
VREG90
8.91
9.00
9.09
|IREG90|
15
-
-
REG90_TH
5.4
6.0
6.6
REG90_UVLO hysteresis
REG90_HYS
250
500
750
REG90 discharge resistance
【STB block】
REG90_DIS
325
500
675
STB pin HIGH voltage
STBH
2.0
-
35
STB pin LOW voltage
STB pull down resistor
【PWM block】
STBL
ISTB
-0.3
-
0.8
600
1000
1400
PWMx pin HIGH Voltage
PWM_H
2.0
-
5.5
PWMx pin LOW Voltage
PWMx pin Pull Down resistance
【FAIL block (OPEN DRAIN)】
PWM_L
RPWM
-0.3
-
0.8
600
1000
1400
FAILB pin on-resistance
FAILB pin leak current
CP detect voltage
CP charge current
RFAIL
ILFAIL
VCP
ICP
250
500
1000
-2
0
2
2.85
3.0
3.15
2.7
3.0
3.3
Unit
Condition
V VISENSE=SWEEP UP
V VFB=SWEEP UP
μA VADIM=2.0V
μA VISENSE=4V
Ω ION=-10mA
Ω ION=10mA
V IO=0mA,VCC>11V
mA
V REG90=SWEEP DOWN
VSTB=H->L,
mV REG90=SWEEP UP
VSTB=H->L,
kΩ REG90=9.0V
V VSTB=SWEEP UP
V VSTB=SWEEP DOWN
kΩ VSTB=3.0V
V VPWMｘ=SWEEP UP
V VPWMｘ=SWEEP DOWN
kΩ VPWMｘ=3.0V
Ω VFAIL=1.0V
μA VFAIL=15V
V VCP=SWEEP UP
μA
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28.Nov.2013 Rev.003