AAT1118 datasheet(1/14 Pages) AAT

Part #	AAT1118

Description	ADJUSTABLE TRIPLE-CHANNEL TFT LCD DC-DC CONVERTER

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Manufacturer	AAT [Advanced Analog Technology, Inc.]

Direct Link	http://www.aatech.com.tw

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1 / 14 page

Advanced Analog Technology, Inc.

– 台灣類比科技股份有限公司 –

–

Advanced Analog Technology, Inc. –

Page 1 of 14

V 2.0011

AAT1118

Details are subject to change without notice.

ADJUSTABLE TRIPLE-CHANNEL TFT LCD

DC-DC CONVERTER

Features

Built in 1.6A, 0.2

Switching NMOS

Fault and Thermal Protection

Internal Soft-Start Function

Internal Power Up Sequencing

Dual Adjustable Charge Pump Output

Positive Output to 40V

Negative Output to

40V

−

Power Good Output

TSSOP-16 Package

Pin Configuration

(Top View)

General Description

The AAT1118 is an adjustable triple-channel TFT

LCD DC-DC converter that provides one current

mode PWM, one positive charge pump and one

negative charge pump. Built-in functions include

soft-start and power up sequencing. When power is

turned on, soft-start avoids inrush current. Power up

sequencing feature provides compensation for LCD

panel to maintain a smooth voltage during a turn-on

cycle.

The DC-DC converter consists of an on-chip

voltage reference, error amplifier, current sense,

pulse width modulation controller, under-voltage

lockout protection, thermal detect, soft-start, and

fault protection circuit.

When the two charge pumps are in operation, the

output voltage would be doubled and the generated

VP3 and VP2

could switch on or off TFT gate.

With

the

minimal

external

components,

the

AAT1118 offers a simple and economical solution

for TFT LCD power.

(TSSOP-16 Package)

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