BUF04701 datasheet(18/30 Pages) TI2

18 / 30 page

Reference

GammaCorrection

COM

BUFxx702

TPS65100

LCD

Supply

TPA3002

Audio

Speaker

Driver

2.7Vto5V

+15V

-12V

+30V

3.3V

Logicand

Timing

Controller

SourceDriver

High-Resolution

TFT-LCDPanel

BUF07703

BUF06703

BUF05703

SBOS269C – MARCH 2003 – REVISED APRIL 2010

www.ti.com

COMPLETE LCD SOLUTION FROM TI

amplifier. Texas Instruments offers a full line of linear

and

switch-mode

audio

power

amplifiers.

For

Besides the BUFxx703 line of gamma correction

excellent audio performance TI recommends the

buffers, TI offers a complete set of ICs for the LCD

OPA364 or OPA353 as headphone drivers. For more

panel market: source and gate drivers, various

information visit www.ti.com.

power-supply

solutions,

well

audio

power

solutions. Figure 41 shows the total IC solution from

Integrated DC/DC Converter for LCD Panels:

TI.

TPS65100

The TPS65100 offers a very compact and small

Audio Power Amplifier for TV Speakers

power

supply

solution

provide

all

three

The TPA3002D2 is a 7W (per channel) stereo audio

power-supply voltages required by TFT (thin film

amplifier specifically targeted towards LCD monitors

transistor) LCD displays. Additionally the device has

and TVs. It offers highly efficient, filter-free Class-D

an integrated VCOM buffer. The auxiliary linear

operation for driving bridged tied stereo speakers.

regulator controller can be used to generate the 3.3V

The TPA3002D2 is designed to drive stereo speakers

logic power rail for systems powered by a 5V supply

as low as 8

Ω without an output filter. The high

rail only. The main output can power the LCD source

efficiency of the TPA3002D2 eliminates the need for

drivers as well as the BUFxx703. An integrated

external

heatsinks

when

playing

music.

Stereo

adjustable charge pump doubler/tripler provides the

speaker volume is controlled with a dc voltage

positive LCD gate drive voltage. An externally

applied to the volume control terminal offering a

adjustable

negative

charge

pump

provides

the

range of gain from

−40dB to +36dB. Line outputs, for

negative gate drive voltage. The TPS65100 has an

driving external headphone amplifier inputs, are also

integrated VCOM buffer to power the LCD backplane.

dc voltage controlled with a range of gain from

−56dB

A version of the BUFxx703 without the integrated

to +20dB. An integrated +5V regulated supply is

VCOM buffer could be used for minimum redundancy

provided

for

powering

external

headphone

and lowest cost. For LCD panels powered by 5V only,

the TPS65100 has a linear regulator controller that

uses an external transistor to provide a regulated

3.3V output for the digital circuits. Contact the local

sales office for more information.

Figure 41. TI LCD Solution

Product Folder Link(s): BUF07703 BUF06703 BUF05703

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