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TPS65150 Datasheet

  • TPS65150

  • 紧凑型 LCD 偏置电源 IC，支持 2.5V/3.3V 和 5V 输入电压轨

  • 1329.07KB

  • 29页

  • TI

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Actual Size
6,4 mm x 7,8 mm
Actual Size
4 mm x 4 mm
TPS65150
SLVS576 鈥?SEPTEMBER 2005
www.ti.com
Low Input Voltage, Compact LCD Bias IC With VCOM Buffer
FEATURES
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1.8-V to 6-V Input Voltage Range
Integrated VCOM Buffer
High Voltage Switch to Isolate VGH
Gate Voltage Shaping of VGH
2-A Internal MOSFET Switch
Main Output Vs up to 15 V With <1% Output
Voltage Accuracy
Virtual Synchronous Converter Technology
Negative Regulated Charge Pump Driver VGL
Positive Regulated Charge Pump Driver VGH
Adjustable Power On Sequencing
Adjustable Fault Detection Timing
Gate Drive Signal for external isolation
MOSFET
Thermal Shutdown
Available in TSSOP-24 Package
Available in QFN-24 Package
APPLICATIONS
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TFT LCD Displays for Notebooks
TFT LCD Display for Monitor
Car Navigation Display
DESCRIPTION
The TPS65150 offers a very compact and small
power supply solution that provides all three voltages
required by thin film transistor (TFT) LCD displays.
With an input voltage range of 1.8 V to 6.0 V the
device is ideal for notebooks powered by a 2.5-V or
3.3-V input rail or monitor applications with a 5-V
input voltage rail. Additionally the TPS65150 provides
an integrated high current buffer to provide the
VCOM voltage for the TFT backplane.
Two regulated adjustable charge pump driver provide
the positive VGH and negative VGL bias voltages for
the TFT. The device incorporates adjustable power
on sequencing for VGL as well as for VGH. This
avoids any additional external components to
implement application specific sequencing. The
device has an integrated high voltage switch to
isolate VGH.
TYPICAL APPLICATION
R8
500 kW
C6
Vin
5V
C1
22
mF
1 nF
L1
3.9
mH
D1
R1
820 kW
V
S
13.5 V/450 mA
R7
500 kW
VGL
鈭? V/20 mA
D2
C7
0.33
mF
IN VIN
DRVN
FBN
SW SW
SUP
FB
DRVP
C14
1
mF
D4
C15
22 pF
C2
22
mF
R2
75 kW
C16
D5
CPI
0.33
mF
CPI
C4
0.33
mF
R5
1 MW
C3
0.33
mF
R3
620 kW
REF
D3
GND
PGND
TPS65150
FBP
CPI
VGH
VCOM
GD
FDLY
R4
150 kW
C8
220 nF
VGH
Control Signal
C9
2.2 nF
PGND
CTRL
COMP
DLY1
DLY2
ADJ
VGH
23 V/20 mA
V
COM
Output
C5
1
mF
V
IN
R6
56 kW
C10
22 pF
C11
C12
C13
100 nF
10 nF 10 nF
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPad is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2005, Texas Instruments Incorporated

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