Datasheet > AAT2601

AAT2601

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		便携式
页数	文件大小	规格书
38页	1293K
描述
Total Power Solution for Portable Applications

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PRODUCT DATASHEET

AAT2601178

Total Power Solution for Portable Applications

General Description

Features

•

The AAT2601 is a member of AnalogicTech’s Total Power

Management IC^TM(TPMIC^TM) product family. It contains

a single-cell Lithium Ion/Polymer battery charger, a fully

integrated step-down converter and 5 low dropout (LDO)

regulators. The device also includes 2 load switches for

dynamic power path/sleep mode operation, making it

ideal for small handheld portable GSM or CDMA mobile

telephones.

Voltage Regulator V_INRange: 4.5V to 6V

Complete Power Integration

Integrated Load Switches to Power Converters from

AC Adapter or Battery Automatically

Low Standby Current

▪

•

170μA (typ) w/ Buck (Core), LDO1 (PowerDigital),

and LDO2 (PowerAnalog) Active, No Load

One Step-Down Buck Converter (Core)

▪

1.8V, 300mA Output

1.5MHz Switching Frequency

▪

The battery charger is a complete thermally regulated

constant current/constant voltage linear charger. It

includes an integrated pass device, reverse blocking pro-

tection, high accuracy current and voltage regulation,

charge status, and charge termination. The charging

current, charge termination current, and recharge volt-

age are programmable with an external resistor and/or

by a standard I²C interface.

▪

Fast Turn-On Time (120μs typ)

▪

Five LDOs Programmable with I²C

•

LDO1: 3.0V, 300mA (PowerDigital)

LDO2: 3.0V, 150mA (PowerAnalog or PLL)

LDO3: 3.0V, 150mA (TCXO)

LDO4: 3.0V, 150mA (TX)

LDO5: 3.0V, 150mA (RX)

PSRR: 60dB@10kHz

Noise: 50μVrms for LDO3, LDO4, and LDO5

▪

The step-down DC/DC converter is integrated with internal

compensation and operates at a switching frequency of

1.5MHz, thus minimizing the size of external components

while keeping switching losses low and efficiency greater

than 95%. All LDO output voltages are programmable

using the I²C interface.

▪

•

One Battery Charger

Digitized Thermal Regulation

Charge Current Programming up to 1.4A

Charge Current Termination Programming

Automatic Trickle Charge for Battery Preconditioning

▪

The five LDOs offer 60dB power supply rejection ratio

(PSRR) and low noise operation making them suitable for

powering noise-sensitive loads.

(2.8V Cutoff)

•

Adapter OK (ADPP) and Reset (RESET) Timer Outputs

Separate Enable Pins for Supply Outputs

Over-Current Protection

Over-Temperature Protection

5x5mm TQFN55-36 Package

All six voltage regulators operate with low quiescent cur-

rent. The total no load current when the step-down con-

verter and 2 LDOs are enabled is only 170μA.

The AAT2601 is available in a thermally enhanced low

profile 5x5x0.8mm 36-pin TQFN package.

Applications

•

Digital Cameras

GSM or CDMA Cellular Phones

Handheld Instruments

PDAs and Handheld Computers

Portable Media Players

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

2601.2008.01.1.0

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