AAT3603IIH-T1 データシートの表示（PDF） - Advanced Analogic Technologies

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AAT3603IIH-T1

Total Power Solution for Portable Applications

Advanced Analogic Technologies 

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AAT3603178

Total Power Solution for Portable Applications

General Description

The AAT3603 is a member of AnalogicTech’s Total Power

Management ICTM (TPMICTM) 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 is ideal for low cost handheld por-

table GSM or CDMA mobile telephones.

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.

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.

The five LDOs offer 60dB power supply rejection ratio

(PSRR) and low noise operation making them suitable for

powering noise-sensitive loads.

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 AAT3603 is available in a thermally enhanced low

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

Features

• Voltage Regulator VIN Range: 4.5V to 6V

• Low Cost Power Integration

• 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

▪ 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

• One Battery Charger

▪ Digitized Thermal Regulation

▪ Charge Current Programming up to 1.4A

▪ Charge Current Termination Programming

▪ Automatic Trickle Charge for Battery Preconditioning

(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

Applications

• Digital Cameras

• GSM or CDMA Cellular Phones

• Handheld Instruments

• PDAs and Handheld Computers

• Portable Media Players

3603.2008.06.1.0

www.analogictech.com

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