BD9489F Datasheet, PDF (4/39 Pages) Rohm – DCDC converter with current mode

BD9489F
Datasheet
1.8 Electrical Characteristics (Unless otherwise specified, Ta=25°C，VCC=24V)
Parameter
Symbol
Limit
Unit
Min. Typ. Max.
【LED Protection Block】
LED OCP Detect Voltage
VLEDOCP 2.88 3.0 3.12
V
Over Boost Detection Voltage
VFBH
3.84 4.00 4.16
V
【Dimming Block】
ADIM Pin Leak Current
ISENSE Pin Leak Current
DIMOUT Source ON Resistance
DIMOUT Sink ON Resistance
ILADIM
-2
IL_ISENSE
-2
RONSO
4.0
RONSI
3.0
0
2
μA
0
2
μA
8.0 16.0
Ω
6.5 13.0
Ω
【REG58 Block】
REG58 Output Voltage 1
REG58_1 5.742 5.8 5.858 V
REG58 Output Voltage 2
REG58_2 5.713 5.8 5.887 V
REG58 Available Current
| IREG58 |
15
-
-
mA
REG58_UVLO Detect Voltage
REG58_TH 2.0
2.3
2.6
V
REG58 Discharge Current
【STB Block】
STB Pin HIGH Voltage 1
STB Pin HIGH Voltage 2
STB Pin LOW Voltage
STB Pull Down Resistance
【PWM Block】
PWM Pin HIGH Voltage
PWM Pin LOW Voltage
PWM Pin Pull Down Resistance
【FAIL Block 】
CP Detect Voltage
CP Charge Current
REG58_DIS 3.0
5.0
7.0
μA
STBH1
STBH2
STBL
RSTB
PWM_H
PWM_L
RPWM
VCP
ICP
8.5
-
19
V
2.0
-
6.5
V
-0.3
-
0.8
V
600 1000 1400 kΩ
1.5
-
18
V
-0.3
-
0.8
V
600 1000 1400 kΩ
2.85 3.0 3.15
V
2.7
3.0
3.3
μA
Condition
VISENSE=SWEEP UP
VFB=SWEEP UP
VADIM=2.0V
VISENSE=4.0V
IO=0mA
IO=-15mA
VREG58=SWEEP DOWN,
VSTB=0V
STB=ON->OFF, REG58=4.0V,
PWM=L
Enable keeping Vout function
Disenable keeping Vout function
VSTB=3.0V
VPWM=3.0V
VCP=SWEEP UP
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TSZ22111・15・001
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TSZ02201-0F1F0C100250-1-2
29.Oct 2014 Rev.002