General Description
The AAT1141 SwitchReg is a 2MHz step-down converter with an input voltage range of 2.7V to 5.5V and output voltage as low as 0.6V. It is optimized to react quickly to a load variation.
The AAT1141 is available in fixed voltage versions with internal feedback and a programmable version with external feedback resistors. It can deliver 600mA of load current while maintaining a low 35μA no load quiescent current. The 2MHz switching frequency minimizes the size of external components while keeping switching losses low.
The AAT1141 is designed to maintain high efficiency throughout the operating range, which is critical for portable applications.
The AAT1141 is available in a Pb-free SOT23-5 package and is rated over the -40°C to +85°C temperature range.

Features
*VIN Range: 2.7V to 5.5V
*VOUT Fixed or Adjustable from 0.6V to VIN
*35μA No Load Quiescent Current
*Up to 98% Efficiency
*600mA Max Output Current
*2MHz Switching Frequency
*150μs Soft Start
*Fast Load Transient
*Over-Temperature Protection
*Current Limit Protection
*100% Duty Cycle Low-Dropout Operation
*<1μA Shutdown Current
*SOT23-5 Package
*Temperature Range: -40°C to +85°C

Applications
*Cellular Phones
*Digital Cameras
*Handheld Instruments
*Microprocessor / DSP Core / IO Power
*PDAs and Handheld Computers
*USB Devices

AAT1141ICB-0.6-T1, AAT1141IGV-0.6-T1, AAT1141IGV-1.0-T1, AAT1141IGV-1.2-T1

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