Datasheet

VIN
V
O
1
Up to 15 V / 400 mA
V 3
Up to 30 V / 20 mA
O
V 2
Up to 12 V / 20 mA
O
V 4
3.3 V
O
VCOM
Boost
Converter
Positive Charge
Pump
Negative
Charge Pump
VCOM Buffer
Linear Regulator
Controller
2.7 V to 5.8 V
TPS65100-Q1
www.ti.com
SLVS849A JULY 2008REVISED APRIL 2012
TRIPLE-OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER
Check for Samples: TPS65100-Q1
1
FEATURES
DESCRIPTION
23
Qualified for Automotive Applications
The TPS65100 offers a compact and small power
2.7-V to 5.8-V Input Voltage Range
supply solution that provides all three voltages
1.6-MHz Fixed Switching Frequency
required by thin-film transistor (TFT) LCD displays.
The auxiliary linear regulator controller can be used
Three Independently Adjustable Outputs
to generate a 3.3-V logic power rail for systems
Main Output of up to 15 V With < 1% Output
powered by a 5-V supply rail only.
Voltage Accuracy
The main output, V
O
1, is a 1.6-MHz fixed-frequency
Virtual Synchronous Converter Technology
PWM boost converter providing the source-drive
Negative Regulated Charge Pump Driver V
O
2
voltage for the LCD display. The TPS65100 has a
Positive Charge Pump Converter V
O
3
typical switch current limit of 2.3 A. A fully integrated
adjustable charge pump doubler/tripler provides the
Integrated VCOM Buffer
positive LCD gate-drive voltage. An externally
Auxiliary 3.3-V Linear Regulator Controller
adjustable negative charge pump provides the
Internal Soft Start
negative gate-drive voltage. Due to the high 1.6-MHz
switching frequency of the charge pumps,
Internal Power-On Sequencing
inexpensive and small 220-nF capacitors can be
Fault Detection of all Outputs
used.
Thermal Shutdown
The TPS65100 has an integrated VCOM buffer to
Available in TSSOP-24 PowerPAD™ Package
power the LCD backplane. For LCD panels powered
by 5 V only, the TPS65100 has a linear regulator
APPLICATIONS
controller using an external transistor to provide a
regulated 3.3-V output for the digital circuits. For
TFT LCD Displays for Notebooks
maximum safety, the TPS65100 goes into shutdown
TFT LCD Displays for Monitors
as soon as one of the outputs is out of regulation.
Portable DVD Players
The device can be enabled again by toggling the
input or the enable (EN) pin to GND.
Tablet PCs
Car Navigation Systems
Industrial Displays
1
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.
2PowerPAD is a trademark of Texas Instruments.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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