BD8166EFV Datasheet, PDF (1/18 Pages) Rohm – 12V Input Multi-channel System Power Supply IC

Power Supply IC Series for TFT-LCD Panels
12V Input Multi-channel
System Power Supply IC
BD8166EFV
No.09035EBT14
●Description
The BD8166EFV is a system power supply for the TFT-LCD panels used for liquid crystal TVs.
Incorporates two high-power FETs with low on resistance for large currents that employ high-power packages, thus driving
large current loads while suppressing the generation of heat. A charge pump controller is incorporated as well, thus greatly
reducing the number of application components.
●Features
1) Step-up and step-down DC/DC converter
2) Incorporates 2-A N-channel FET.
3) Incorporates positive/negative charge pumps.
4) Incorporates a gate shading function.
5) Input voltage limit: 6 V to 18 V
6) Feedback voltage: 1.25 V ± 1.6%
7) Switching frequency: 500 kHz
8) Protection circuit: Undervoltage lockout protection circuit
Thermal shutdown circuit
Overcurrent protection circuit
Short protection circuit of timer latch type
9) HTSSOP-B40 Package
●Applications
Power supply for the TFT-LCD panels used for LCD TVs
●Absolute maximum ratings (Ta = 25℃)
Parameter
Symbol
Limit
Unit
Power supply voltage
Vcc, PVCC
19
V
Vo1 voltage
Vo1
19
V
Vo2 voltage
Vo2
40
V
IG Voltage
IGH
7
V
Maximum junction temperature
Tjmax
150
℃
Power dissipation
Pd
4700^*1
mW
Operating temperature range
Topr
-40 to 85
℃
Storage temperature range
Tstg
-55 to 150
℃
* Reduced by 37.6 mW/℃ over 25℃, when mounted on a glass epoxy 4-layer board (70 mm  70 mm  1.6 mm)
(Copper foil on back 70 mm  70 mm).
●Recommended Operating Ranges (Ta = 25℃)
Parameter
Symbol
Limit
Min.
Max.
Unit
Power supply voltage
VCC, PVCC
6
18
V
Vo1 voltage
Vo1
8
18
V
Vo2 voltage
Vo2
—
39
V
I G Voltage
IGH
—
5
V
SW current
SW1, SW2
—
2
A
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2009.07 - Rev.B