AAT1171 PDF – Voltage-Scaling Step-Down Converter

Part Number : AAT1171

Function : Voltage-Scaling Step-Down Converter

Package : TDFN33-12 Pin Type

Manufactures : AAT

Images :

1 page
AAT1171 image

Description :

The AAT1171 SwitchReg, a member of AnalogicTech’s Total Power Management IC™ (TPMIC™) product family, has been specifically designed to dynamically control the operating voltage of a WCDMA or CDMA power amplifier inside single lithium-ion battery-powered systems. The AAT1171 outputs a voltage between 0.6V and 3.6V, thereby optimizing the amplifier efficiency at both low and high transmit levels.

Features :

• VIN Range: 2.7V to 5.5V

• Variable Output Voltage: 0.6V to 3.6V

• 600mA Output Current

• DAC Input: 0.2V to 1.2V

• High Output Accuracy: ±3%

• 45µA No Load Quiescent Current

• Internal Soft Start Limits Startup Current and Output Voltage Overshoot

• Synchronizable to External 19.8MHz System Clock

• Over-Temperature and Current Limit Protection

• Integrated 85mΩ Bypass MOSFET

• 2MHz Operation

• PWM/LL Control with Override

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2 page
pinout

Applications :

• WCDMA or CDMA PA in Cellular Phones, Smartphones, Feature Phones, etc.

• Express Card

• PCMCIA Data Cards

AAT1171 Datasheet

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