General Description
The AAT1152 SwitchReg™ is a member of AnalogicTech™s Total Power Management™ IC product family. The Step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. Able to deliver 1A with internal Power MOSFETs, the current-mode controlled IC provides high efficiency using synchronous rectification. Fully internally compensated, the AAT1152 simplifies system design and lowers external part count.

FEATUREs
• 5.5V max supply input
• Fixed output voltage: 1.1V–4.2V with 100 mV increment
• 1A output current
• Integrated low on resistance power switches
• Synchronous rectification
• Up to 95% efficiency
• Power Good signal
• Internally compensated current mode control
• High initial accuracy: ±1%
• 850kHz switching frequency
• Constant PWM mode
• Low output ripple with light load
• Internal softstart
• Current limit protection
• Over-Temperature protection
• MSOP-8 package

APPLICATIONs
• Computer Peripherals
• Set Top Boxes
• Network Cards
• Cable/DSL Modems
• High efficiency conversion from 5V or 3.3V supply