Datasheet > AAT1164C-Q5-T

AAT1164C-Q5-T

更新时间： 2022-12-17 12:48:26

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TRIPLE-CHANNEL TFT LCD POWER SOLUTION

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AAT1164C-Q5-T 数据手册

Advanced Analog Technology, Inc.

April 2007

AAT1164/AAT1164B/AAT1164C

Product information presented is current as of publication date. Details are subject to change without notice.

TRIPLE-CHANNEL TFT LCD POWER SOLUTION

WITH OPERATIONAL AMPLIFIERS

FEATURES

GENERAL DESCRIPTION

The AAT1164/AAT1164B/AAT1164C is a triple-channel

TFT LCD power solution that provides a step-up PWM

controller, two high voltage LDO drivers (one for positive

voltage and one for negative voltage), five operational

amplifiers, and one high voltage switch up to 28V for

TFT LCD display.

ꢀ

Built in 3A, 0.2Ω Switching NMOS

Positive LDO Driver Up to 28V/5mA

Negative LDO Driver Down to –14V/5mA

1 V_COMand 4 V_GAMMAOperational Amplifiers

28V High Voltage Switch for VGH

Internal Soft-Start Function

The PWM controller consists of an on-chip voltage

reference, oscillator, error amplifier, current sense circuit,

comparator, under-voltage lockout protection and

internal soft-start circuit. The thermal and power fault

protection prevents internal circuit being damaged by

excessive power.

1.2MHz Fixed Switching Frequency

3 Channels Fault and Thermal Protection

Low Dissipation Current

QFN-32 Package Available

The high voltage LDO drivers generate two regulated

output voltage (V_OUT2and V_OUT3) set by external resistor

dividers. VGH voltage does not activate until DLY voltage

exceeds 1.25V.

PIN CONFIGURATION

The AAT1164/AAT1164B/AAT1164C contains 4+1

operational amplifiers. VO1, VO2, VO4, and VO5 are for

gamma corrections and VO3 is for V_COM. In the short

circuit condition, operational amplifiers are capable of

sourcing 100mA current for V_GAMMA, and 200mA

current for V_COM

With the minimal external components, the

AAT1164/AAT1164B/AAT1164C offers a simple and

economical solution for TFT LCD power.

–

Advanced Analog Technology, Inc. –

Version 1.00

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