AAT1232IRN-T1 Advanced Analog Technology, Inc., AAT1232IRN-T1 Datasheet

AAT1232IRN-T1

Manufacturer Part Number

AAT1232IRN-T1

Description

24V 100mA Step-Up Converter

Manufacturer

Advanced Analog Technology, Inc.

Datasheet

1.AAT1232IRN-T1.pdf (17 pages)

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General Description

The AAT1232 is a high frequency, high efficiency

boost converter capable of 24V maximum output

voltage. The internal power switch can deliver

100mA load current. It is the ideal power solution to

power OLED, LCD, and CCD applications operat-

ing from a single cell lithium-ion battery.

The high switching frequency (up to 2MHz) pro-

vides fast response to load transients with small

external components. The fully integrated control

IC simplifies the design while reducing the total

PCB footprint. The AAT1232 offers a true load dis-

connect feature which isolates the load from the

power source when EN/SET is pulled low. This

eliminates leakage current and maintains zero volt-

age at the output while disabled.

The output voltage can be dynamically set by acti-

vating one of two reference levels (FB1 or FB2)

through the SEL logic pin. Optionally, AnalogicTech’s

Simple Serial Control™ (S

vides dynamic programmability across a wide output

voltage range through the EN/SET pin.

The AAT1232 is available in a Pb-free, thermally-

enhanced 16-pin 3x4mm TDFN low-profile pack-

age or a Pb-free 12-pin TSOPJW package.

Typical Application

1232.2006.12.1.3

2.7V~5.5V

Input:

2.2µF

Cwire™) interface pro-

EN/SET

PGND

SEL

VIN

AAT1232

GND

FB2

FB1

LIN

Features

•

Applications

•

2.2µH

Maximum Output: 24V @ 100mA

True Load Disconnect

Dynamic Voltage Control Options

Hysteretic Control

— No External Compensation Components

— Excellent Load Transient Response

— High Efficiency at Light Load

Up to 2MHz Switching Frequency

Ultra-Small Inductor and Capacitors

Integrated Low R

Up to 85% Efficiency

<1µA Shutdown Current

Integrated Soft Start

Cycle-by-Cycle Current Limit

Short-Circuit, Over-Temperature Protection

Available in TSOPJW-12 or TDFN34-16

Package

-40°C to +85°C Temperature Range

CCD Bias Circuit

Digital Still Cameras

LCD Bias Circuit

Mobile Handsets

MP3 Players

OLED Displays

PDAs and Notebook PCs

24V 100mA Step-Up Converter

Range: 2.7V to 5.5V

Schottky

10.0kΩ

20.0kΩ

576kΩ

DS(ON)

24V @ 100mA

MOSFET Switches

SwitchReg

2.2µF, 25V

AAT1232

™

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