AAT1275ITP-5.0-T1 Advanced Analogic Technologies, Inc., AAT1275ITP-5.0-T1 Datasheet

AAT1275ITP-5.0-T1

Manufacturer Part Number

AAT1275ITP-5.0-T1

Description

Manufacturer

Advanced Analogic Technologies, Inc.

Datasheets

1.AAT1275ITP-5.0-T1.pdf (19 pages)

2.AAT1275ITP-5.0-T1.pdf (19 pages)

3.AAT1275ITP-5.0-T1.pdf (19 pages)

4.AAT1275ITP-5.0-T1.pdf (19 pages)

Specifications of AAT1275ITP-5.0-T1

Date_code

07+

Packing_info

TSOPJW-12

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AAT1275ITP-5.0-T1

Manufacturer:

ANALOGIC

Quantity:

761

Company:

Meier Automation Equipment Co., Limited

Part Number:

AAT1275ITP-5.0-T1

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ANALOGIC

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20 000

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General Description

The AAT1275 SwitchReg is a 2MHz, 500mA syn-

chronous boost converter with an integrated current-

limiting load switch controlled output. The AAT1275

operates from a single-cell Lithium-ion/ polymer bat-

tery source and provides a regulated 5V, current

limit controlled output to support USB port V

applications in portable consumer electronic prod-

ucts. The AAT1275 can support both USB 2.0 host

port and USB on-the-go operation, as well as gen-

eral purpose applications where a 5V supply with a

user programmable current limit is needed.

The high efficiency boost converter section of the

AAT1275 is typically set for a 5V output and can

deliver up to 500mA load current to support USB

2.7V. The high boost converter switching frequen-

cy (up to 2.0MHz) provides fast load transient and

allows the use of small external components. Fully

integrated control circuitry simplifies system design

and reduces total solution size.

The integrated, programmable current limiting load

switch provides USB port protection for portable

devices allowing the AAT1275 to supply a 5V USB

active low fault flag to alert the system in the event

of an over-current condition applied to the

AAT1275 output.

The AAT1275 is available in the Pb-free, space-

saving 12-pin TSOPJW and 16-pin TDFN34 pack-

ages and is rated over the -40°C to +85°C operat-

ing temperature range.

1275.2007.01.1.3

Typical Application

BUS

up to 500mA. The load switch provides an

operation from an input supply as low as

Enable

Fault

4.7µF

10k

SET

VCC

FLT

SET

BUS

Boost Converter with USB Power Switch

LIN

AAT1275

L1 2.2µH

GND

Features

•

Applications

•

OUT1

OUT2

High Frequency Boost With 5V / 500mA

Output Capability From a Single-Cell Lithium-

Ion/Polymer Battery

Input Voltage Range: 2.7V to 5V

>90% Efficiency

Up to 2MHz Switching Frequency

True Load Disconnect

Load Switch With Programmable Current Limit

Over-Temperature, Over-Current Protection

Inrush Current Limit

Fault Report

Low Shutdown Current < 1µA Typical

-40°C to +85°C Temperature Range

TSOPJW-12 and TDFN34-16 Packages

USB On-the-Go

Cell Phones

Digital Still Cameras

PDAs and Portable Media Players

Smart Phones

Other Hand-Held Devices

OUT1

Adjustable or Fixed (5V)

432k

59k

FB1

FB2

1µF

OUT2

4.7µF

OUT1

BUS

Output

SwitchReg

AAT1275

™

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