Part Number : AAT1171
Function : Voltage-Scaling Step-Down Converter
Package : TDFN33-12 Pin Type
Manufactures : AAT
Images :
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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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Applications :
• WCDMA or CDMA PA in Cellular Phones, Smartphones, Feature Phones, etc.
• Express Card
• PCMCIA Data Cards
