Datasheet > AT1739

AT1739

更新时间： 2024-11-24 06:38:15

品牌	Logo	应用领域
致新 - GMT		转换器升压转换器
页数	文件大小	规格书
1页	89K
描述
LCD Panel Step-up Converter with Analog Multi Function Outputs

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中文翻译

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数据手册

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AT1739 数据手册

Global Mixed-mode Technology Inc.

AT1739

LCD Panel Step- up Converter with Analog Multi-

Function Outputs

Features

General Description

The AT1739 offers a complete power-supply solution

for TFT LCD panels used in LCD monitors and NB LCD

panels. The AT1739 consists of a high-performance

step-up converter, a low-power charge-pump regulator,

a high-performance linear regulator, an operational

amplifier, a voltage detector and a logic-controlled

gate-on pulse modulator.

2.6V to 5.5V Input Supply Range

640kHz/1.2MHz Current-Mode PWM Step-Up

Regulator:

Fast Transient Response

1.0% High-Accuracy Output Voltage

Built-In 18V, 2.0A, 0.2Ω N-Channel MOSFET

Programmable Soft-Start

Current-Limit

Latched Fault Protection with Timer

High Efficiency

Gate-On Charge Pump Regulator Controller

with Latched Fault Protection with Timer

High-Performance Linear Regulator:

1.5% Output Accuracy

Works with Small Ceramic Output Capacitors

Fast Transient Response

The step-up DC-DC converter provides the regulated

supply voltage for the panel source driver ICs. The

charge-pump regulator generates the positive gate-on

supply voltage. The operational amplifier supplies the

VCOM buffer with high output current, fast slew rate and

wide bandwidth performances for driving capacitive loads.

The high-voltage gate-on pulse modulator to control

the positive gate-on output voltage waveform for

reducing the flicker on TFT LCD panel.

Foldback Current Limit

The high-performance linear regulator uses an internal

P-channel MOSFET to supply load currents up to 350mA.

It provides the regulated supply voltage for the TCON IC.

High-Current Operational Amplifier:

±150mA Output Short-Circuit Current

13V/µs Slew Rate

12MHz, -3dB Bandwidth

Rail-to-Rail Input/Output

Gate-on Pulse Modulator with Adjustable Delay

for Sequence Control

The voltage detector with adjustable detected

voltage-point and delay-time monitors the input supply

voltage to prevent the improper shutdown of the

system power application.

Voltage Detector with Adjustable Delay

The AT1739 is available in a 24-pin thin QFN package

which is 4mm x 4mm with a maximum thickness of

0.8mm for ultra-thin LCD panel design.

Applications

Ordering Information

LCD Monitor Panel Modules

NB LCD Panel Modules

Automotive Displays

ORDER

NUMBER

AT1739R51U

TEMP.

RANGE

PACKAGE

(Green)

MARKING

A1739

-40°C to 85°C TQFN4X4-24

Note: R5: TQFN4X4-24

1 : Bonding Code

U: Tape & Reel

Pin Configuration

VDD

17 DRVP

16 FBP

Thermal

Pad

AGND

FBL

15 VPSRC

14 GON

13 DRN

OUTL

AT1739 TQFN4X4-24

Ver: 0.2

Dec 04, 2008

TEL: 886-3-5788833

http://www.gmt.com.tw

中文翻译

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与AT1739相关器件

型号	品牌	获取价格	描述	数据表
AT1739R51U	GMT	获取价格	LCD Panel Step-up Converter with Analog Multi Function Outputs
AT-1740-TT-R	PUIAUDIO	获取价格	ALL DIMENSIONS ARE IN MILLIMETERS
AT1741	ETC	获取价格	2-CHANNEL PWM CONTROLLER FOR CCFL BACKLIGHT
AT1741D	ETC	获取价格	2-CHANNEL PWM CONTROLLER FOR CCFL BACKLIGHT
AT1741S	ETC	获取价格	2-CHANNEL PWM CONTROLLER FOR CCFL BACKLIGHT
AT1743	ETC	获取价格	2-Channel PWM Controller for LCD Display
AT1743P	ETC	获取价格	2-Channel PWM Controller for LCD Display
AT1743P-GRE	GMT	获取价格	Switching Regulator/Controller,
AT-1750-TFL-LW95-R	PUIAUDIO	获取价格	ALL DIMENSIONS ARE IN MILLIMETERS
AT1780	AIMTRON	获取价格	640kHz/1.2MHz,Low-Noise Step-Up Current-Mode PWM Controller

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