www.ti.com

FEATURES

DESCRIPTION

APPLICATIONS

Vin

V 1

U

o

p to 15 V / 400 mA

V 3

U

o

p to 30 V / 20 mA

V 2

U

o

p to 12 V / 20 mA

V 4

3.3

o

V

Vcom

Boost

Converter

Positive Charge

Pump

Negative

Charge Pump

Vcom Buffer

Linear Regulator

Controller

TPS6510x

2.7 V to 5.8 V

TPS65100, TPS65101

TPS65105

SLVS496C – SEPTEMBER 2003 – REVISED APRIL 2006

TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER

•

2.7-V to 5.8-V Input Voltage Range

The TPS6510x series offers a compact and small

power supply solution that provides all three voltages

•

1.6-MHz Fixed Switching Frequency

required by thin film transistor (TFT) LCD displays.

•

3 Independent Adjustable Outputs

The auxiliary linear regulator controller can be used

•

Main Output of up to 15 V With < 1% Output

to generate a 3.3-V logic power rail for systems

Voltage Accuracy

powered by a 5-V supply rail only.

•

Virtual Sychronous Converter Technology

•

PWM boost converter providing the source drive

voltage for the LCD display. The device is available

•

in two versions with different internal switch current

•

Integrated VCOM Buffer

limits to allow the use of a smaller external inductor

•

Auxiliary 3.3-V Linear Regulator Controller

when

lower

output

power

is

required.

The

TPS65100/01 has a typical switch current limit of 2.3

•

Internal Soft Start

A, and the TPS65105 has a typical switch current

•

Internal Power-On Sequencing

limit of 1.37 A. A fully integrated adjustable charge

•

Fault Detection of all Outputs (TPS65100/05)

pump doubler/tripler provides the positive LCD gate

drive voltage. An externally adjustable negative

•

No Fault Detection (TPS65101)

charge pump provides the negative gate drive

•

Thermal Shutdown

voltage.

Due

to

the

high

1.6-MHz

switching

•

Available in TSSOP-24 and QFN-24

frequency of the charge pumps, inexpensive and

PowerPAD™ Packages

small 220-nF capacitors can be used.

The TPS6510x series has an integrated VCOM

buffer to power the LCD backplane. For LCD panels

•

TFT LCD Displays for Notebooks

powered by 5 V only, the TPS6510x series has a

•

TFT LCD Displays for Monitors

linear regulator controller using an external transistor

to provide a regulated 3.3-V output for the digital

•

Portable DVD Players

circuits. For maximum safety, the TPS65100/05 goes

•

Tablet PCs

into shutdown as soon as one of the outputs is out of

•

Car Navigation Systems

regulation. The device can be enabled again by

•

Industrial Displays

toggling the input or the enable (EN) pin to GND.

The TPS65101 does not enter shutdown when one

of the outputs is below its power good threshold.

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.

Copyright © 2003–2006, 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.