BD9483F Datasheet, PDF (3/32 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter type)

BD9483F,FV
Datasheet
●1.1 Electrical Characteristics 1(Unless otherwise specified, Ta=25°C，VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
【Total current consumption】
Circuit current
Circuit current (stand-by)
【UVLO block】
Icc
－
3
6
Ist
－
25
50
Operation voltage（VCC）
Hysteresis Voltage（VCC）
UVLO release voltage
UVLO hysteresis voltage
UVLO pin leak current
【DC/DC block】
VUVLO_VCC
6.0
7.0
8.0
VUHYS_VCC
150
300
600
VUVLO
2.91
3.00
3.09
VUHYS
150
200
250
UVLO_LK
-2
0
2
ISENSE threshold voltage 1
ISENSE threshold voltage 2
ISENSE threshold voltage 3
Oscillation frequency
GATE pin MAX DUTY output
GATE pin ON resistance
(as source)
GATE pin ON resistance
(as sink)
SS pin source current
SS pin ON resistance
Soft start ended voltage
FB source current
FB sink current
OCP detect voltage
【DC/DC protection block】
VLED1
VLED2
VLED3
FCT
NMAX_DUTY
RONSO
RONSI
ISSSO
RSS_L
VSS_END
IFBSO
IFBSI
VCS
0.225
0.988
0.989
142.5
90
2.0
1.2
-3.75
-
3.6
-115
85
360
0.233
1.000
1.015
150
95
4.0
2.5
-3.0
3.0
4.0
-100
100
400
0.242
1.012
1.040
157. 5
99
8.0
5.0
-2.25
5.0
4.4
-85
115
440
OVP detect voltage
OVP detect hysteresis
OVP pin leak current
VOVP
2.88
3.00
3.12
VOVP_HYS
50
100
150
OVP_LK
-2
0
2
Unit
Condition
mA VSTB=3V
μA VSTB=0V
V VCC=SWEEP UP
mV VCC=SWEEP DOWN
V VUVLO=SWEEP UP
mV VUVLO=SWEEP DOWN
μA VUVLO=4V
V VADIM=0.7V
V VADIM=3.0V
V VADIM=3.3V
KHz RT=100kohm
% RT=100kohm
Ω ION=-10mA
Ω ION=10mA
μA VSS=2V
kΩ VSTB=0V, Ioss=50uA
V SS=SWEEP UP
VISENSE=0.2V, VADIM=3.0V,
μA VFB=1.0V
VISENSE=2.0V, VADIM=3.0V,
μA VFB=1.0V
mV CS=SWEEP UP
V VOVP SWEEP UP
mV VOVP SWEEP DOWN
μA VOVP=4V
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