BD9479FV ROHM [Rohm], BD9479FV Datasheet - Page 3

• Manufacturer Part Number: BD9479FV
• Description: White LED Driver for large LCD Panels (DCDC Converter type)
• Manufacturer: ROHM [Rohm]

●Electrical Characteristics (Unless otherwise noted, Ta = 25
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© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
BD9479FV
[Whole Device]
Operation current
Standby current
[UVLO Block]
Operation Voltage （VCC）
Hysteresis Voltage （VCC）
Operation Voltage （UVLO）
Hysteresis Voltage（UVLO）
[DC/DC Block]
Error amp Base Voltage
Oscillation frequency
N pin MAX DUTY output
N pin source ON resistor
N pin sink ON resistor
RT pin Voltage
SS pin source current
Soft start ended Voltage
FB pin source current
FB pin sink current
Over current detect Vlotage
[DC/DC Protection Block]
CP pin source current
CP pin detect Voltage
OVP High detect voltage
OVP Feedback Voltage
OVP Low detect Voltage
[LED PNP Driver Block]
CL pin current setting Voltage
CL pin current setting Voltage
(Analog MAX)
CL pin current setting Voltage
(Analog MIN)
PNP Driver output sink resistor
VREF pin input current
Parameter
VUHYS_VCC
VUVLO_VCC
NMAX_DUT
VRCLMAX
VRCLMIN
VOVPFB
VSS_ED
Symbol
VEAMP
VOVPH
VUVLO
VUHYS
VOVPL
ICPSO
ISSSO
IFBSO
IVREF
RNSO
VRCL
IFBSI
RNSI
VCS
VCP
RBS
FCT
VRT
ICC
IST
Y
142.5
2.375
2.137
2.375
295.5
Min.
2.91
0.55
1.00
-110
0.35
0.14
-3%
-3%
150
170
-2.4
-2.4
-1.0
6.5
0.5
0.5
3.6
－
－
90
85
55
3/26
o
C, VCC=24V)
150.0
2.500
2.250
2.500
300.0
200.0
Limit
Typ.
3.00
0.60
1.50
-100
0.40
0.20
300
210
-2.0
100
-2.0
8.7
7.5
4.0
1.0
0.0
12
95
80
1
1
157.5
2.625
2.363
2.625
304.5
Max.
+3%
+3%
14.0
3.09
0.65
2.00
0.45
0.30
-1.6
-1.6
600
250
115
120
-90
8.5
4.4
1.0
24
99
2
2
Unit
kHz
mV
mV
mV
mV
uA
uA
uA
uA
uA
uA
mA
%
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
TSZ02201-0F1F0C100020-1-2
STB=3V, PWM1-8=0V
STB=0V
VCC=SWEEP UP
VCC=SWEEP DOWN
UVLO=SWEEP UP
UVLO=SWEEP DOWN
BSx pin, VREF=0.9V
RT=100kΩ
RT=100kΩ
RT=100kΩ
VREF=0.9V
VREF max=3.0V
VREF min=0.6V
PWMx=High, VCL=Low
VREF=1V
9.Aug.2012 Rev.001
Condition
Datasheet