BD9483F Datasheet, PDF (2/32 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter type)

BD9483F,FV
Datasheet
●Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Ratings
Unit
Operating Temperature Range
Ta(opr)
-40 to +85
°C
Storage Temperature Range
Tstg
-55 to +150
°C
Maximum Junction Temperature
Tjmax
150
°C
Power Dissipation *1 (SOP24)
Pd1
687
mW
Power Dissipation *2 (SSOP-B24)
Pd2
1024
mW
*1 In the case of mounting 1 layer glass epoxy base-plate of 70mm×70mm×1.6mm, 5.5mW is reduced at 1°C above Ta=25℃.
*2 In the case of mounting 1 layer glass epoxy base-plate of 70mm×70mm×1.6mm, 8.2mW is reduced at 1°C above Ta=25℃
●Operating Ratings (Ta = 25°C)
Parameter
Power supply voltage
Symbol
VCC
Range
Unit
11.0 to 35.0
V
DC/DC oscillation frequency
fsw
50 to 800
kHz
The effective range of ADIM signal
VADIM
0.2 to 3.0
V
PWM input frequency
FPWM
40 to 50k
Hz
The operating conditions written above are constants of the IC unit. Be careful enough when setting the constant in the actual set.
●External Components Recommended Range
Item
REG90 pin connection capacitance
Soft start connection capacitance
RT pin connection resistance
Symbol
Setting Range
Unit
CREG90
1.0 to10
μF
CSS
0.001 to 4.7
μF
RRT
15 to 300
kΩ
The assumed capacitance of GATE pin
CGATE
to 1000
pF
The values described above are constants for a single IC. Adequate attention must be paid to setting of a constant for an actual set of parts
●Pin Configuration
●Physical Dimension Tape and Marking Diagram
BD9483F
Lot No.
Figure 4-1. SOP-24
Figure 3.
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TSZ22111・15・001
D9483FV
Lot No.
2/29
Figure 4-2. SSOP-B24
TSZ02201-0F1F0C100100-1-2
28.Nov.2013 Rev.003