Datasheet > AAT3190ITP-T1

AAT3190ITP-T1

更新时间： 2024-11-06 22:05:11

品牌	Logo	应用领域
ANALOGICTECH		泵
页数	文件大小	规格书
16页	411K
描述
Positive/Negative Charge Pump for Voltage Bias

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AAT3190ITP-T1 数据手册

AAT3190

Positive/Negative Charge Pump for Voltage Bias

™

ChargePump

General Description

Features

The AAT3190 charge pump controller provides the

regulated positive and negative voltage biases

required by active matrix thin-film transistor (TFT)

liquid-crystal displays (LCDs), charge-coupled

device (CCD) sensors, and organic light emitting

diodes (OLEDs). Two low-power charge pumps

convert input supply voltages ranging from 2.7V to

5.5V into two independent output voltages.

•

V_INRange: 2.7V to 5.5V

Adjustable ± Dual Charge Pump

Positive Supply Output Up to +25V

Negative Supply Output Down to -25V

Up to 30mA Output Current

1.0MHz Switching Frequency

<1.0µA Shutdown Current

Internal Power MOSFETs

Internally Controlled Soft Start

Fast Transient Response

Ultra-Thin Solution (No Inductors)

-40°C to +85°C Temperature Range

Available in 8-Pin MSOP or 12-Pin TSOPJW

Package

The dual low-power charge pumps independently

regulate a positive (V_POS) and negative (V_NEG) out-

put voltage. These outputs use external diode and

capacitor multiplier stages (as many stages as

required) to regulate output voltages up to ±25V.

Built-in soft-start circuitry prevents excessive in-

rush current during start-up. A high switching fre-

quency enables the use of small external capaci-

tors. The device’s shutdown feature disconnects

the load from V_INand reduces quiescent current to

less than 1.0µA.

Applications

•

CCD Sensor Voltage Bias

OLEDs

Passive-Matrix Displays

Personal Digital Assistants (PDAs)

TFT Active-Matrix LCDs

The AAT3190 is available in an MSOP-8 or

TSOPJW-12 package and is specified over the

-40°C to +85°C operating temperature range.

Typical Application

INPUT

DRVN

AAT3190

DRVP

FBN

REF

NEGATIVE

OUTPUT

POSTIVE

OUTPUT

FBP

GND

3190.2005.03.1.0

12 3 4 5 6 7...16

中文翻译

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