BD9422EFV Datasheet, PDF (3/28 Pages) Rohm – White LED Driver for large LCD panel

BD9422EFV
Datasheet
●1.1 Electrical Characteristics 1(Unless otherwise specified, Ta=25°C，VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
【Whole device】
Operating circuit current
ICC
-
9
16
Stand-by circuit current
【REG9V block】
REG9V output voltage
Maximum REG9V output current
【Switching block】
ISTB
REG9V
IREG9V
N terminal source resistance
RONH
N terminal sink resistance
RONL
【Over current protection (OCP) block】
Over current protection voltage
VOCP
【Soft-start block】
SS terminal source current
ISS
SS terminal release voltage
VSS
【Error amplifier block】
LED control voltage
VLED
FB sink current
IFBSINK
FB source current (Master)
IFBSOURCEM
FB source current (Slave)
IFBSWRCKS
LED_LV terminal input current
【CT oscillator block】
ILED_LV
Oscillation frequency
FCT
MAX DUTY
DMAX
【Over voltage protection (OVP) block】
OVP detection voltage
VOVP
OVP hysteresis voltage
VOVPHYS
-
8.9
20
-
-
0.40
-1.4
2.9
0.66
55
-155
-310
-2
440
83
2.34
10
12
9.0
-
2.5
3.0
0.45
-1.0
3.0
0.7
100
-100
-200
0
500
89
2.43
50
20
9.1
-
3.5
4.2
0.50
-0.6
3.1
0.74
155
-55
-110
2
560
96
2.52
100
OVP feedback voltage
FBOVP
0.93
1.05
1.17
【Short current protection (SCP) block】
Short circuit protection voltage
VSCP
【M_LED block】
Diode forward voltage
VFLED
Forward voltage offset each ch
VFOFFSET
REG9V pull up resistance
RM_DET
0.12
1120
-
60
0.20
1340
-
100
0.28
1560
20
140
Unit
Condition
mA
STB=3V,LED1-6=ON,
RT=30kΩ
μA STB=0V
V IO=0mA
mA
Ω ION=-10mA
Ω ION=10mA
V VCS=SWEEP UP
μA
V SS=SWEEP UP
V LED_LV=0.7V
μA LED=2.0V, VFB=1.0V
μA LED=0V, VFB=1.0V,CS=0V
μA LED=0V,VFB=1.0V,CS=5V
uA VLED_LV=3V
kHz RT=30kΩ
%
V VOVP=SWEEP UP
mV VOVP=SWEEP DOWN
V ^{PMW1-6=0V,SS=2.8V,}
VLED_LV=0.7V
V VOVP=SWEEP DOWN
mV VLED=0V
mV VLED=0V
kΩ
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TSZ22111・15・001
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TSZ02201-0F1F0C100210-1-2
31.May.2013 Rev.003