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

Manufacturer:

ANALOGIC

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20 000

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General Description

The AAT1275 SwitchReg is a 2MHz, 500mA synchronous

boost converter with an integrated current-limiting load

switch controlled output. The AAT1275 operates from a

single-cell Lithium-ion/ polymer battery source and pro-

vides a regulated 5V, current limit controlled output to

support USB port V

electronic products. The AAT1275 can support both USB

2.0 host port and USB on-the-go operation, as well as

general 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 V

from an input supply as low as 2.7V.

converter switching frequency (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 V

500mA. The load switch provides an active low fault flag

to alert the system in the event of an over-current condi-

tion applied to the AAT1275 output.

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

12-pin TSOPJW and 16-pin TDFN34 packages and is

rated over the -40°C to +85°C operating temperature

range.

Typical Application

SwitchReg

1275.2008.04.1.7

BUS

applications in portable consumer

Enable

Fault

4.7µF

10k

SET

The high boost

BUS

w w w . a n a l o g i c t e c h . c o m

operation

BUS

VCC

FLT

SET

up to

LIN

AAT1275

L1 2.2µH

GND

Features

• High Frequency Boost With 5V / 500mA Output

• Input Voltage Range: 2.7V to 5V

• V

• >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

Applications

• USB On-the-Go

• Cell Phones

• Digital Still Cameras

• PDAs and Portable Media Players

• Smart Phones

• Other Hand-Held Devices

OUT1

OUT2

Boost Converter with USB Power Switch

Capability From a Single-Cell Lithium-Ion/Polymer

Battery

OUT1

Adjustable or Fixed (5V)

432k

59k

FB1

FB2

1µF

OUT2

PRODUCT DATASHEET

4.7µF

OUT1

BUS

Output

AAT1275

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