BD8179MUV Datasheet, PDF (1/13 Pages) Rohm – 5V Input Multi-channel System Power Supply IC

Power Supply IC Series for TFT-LCD Panels
5V Input Multi-channel
System Power Supply IC
BD8179MUV
No.09035EBT04
●Description
The BD8179MUV is a system power supply IC for TFT panels.
A 1-chip IC providing a total of three voltages required for TFT panels, i.e., source voltage, gate high-level, and gate low-level
voltage, thus constructing a TFT panel power supply with minimal components required.
●Features
1) Step Up DC/DC Converter.
2) Incorporates 18V, 3.0A N-channel FET
3) Linear-Regulator Controllers for VGON and VGOFF
4) 5 channel Operational Amplifiers/±150mA Output Short-Circuit Current 40V / µs Slew Rate
5) Switching Frequency: 1200 kHz.
6) Gate Shading Function Included.
7) Protection Circuits
8) Over Current Protection
9) Timer Latch Mode Short Current Protection.
10) Thermal Shut Down.
11) Under Voltage Protection.
12) Over Voltage Protection
13) VQFN032V5050 Package
●Applications
Liquid crystal TV, PC monitor, and TFT-LCD panel
●Absolute maximum ratings (Ta = 25℃)
Parameter
Symbol
Limit
Unit
Power Supply Voltage
VIN
7
V
VMAIN Voltage
VMAIN
20
V
SUP Voltage
VSUP
20
V
DRVP Voltage
VDRVP
40
V
DRVN Voltage
VDRVN
-30
V
SRC Voltage
VSRC
40
V
CTL Voltage
VCTL
7
V
Junction Temperature
Tjmax
150
℃
Power Dissipation
Pd
4560
mW
Operating Temperature Range
Topr
-40～85
℃
Storage Temperature Range
Tstg
-55～150
℃
* Reduced by 19.52 mW/℃ over 25℃, when mounted on a glass epoxy board.
(4-layer 74.2 mm  74.2 mm  1.6 mm).
●Operating Condition
Parameter
Power Supply Voltage
VMAIN Voltage
SUP Voltage
DRVP Voltage
DRVN Voltage
SRC Voltage
Symbol
VIN
VMAIN
VSUP
VDRVP
VDRVN
VSRC
Limit
Min.
Max.
Unit
2.6
5.5
V
8
18
V
-
18
V
-
38
V
-
-20
V
-
38
V
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2009.07 - Rev.B