AAT1151

AAT1151 850kHz 700mA Synchronous Buck DC/DC Converter General Description The AAT1151 SwitchReg™ is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. The step-down switching converter is ideal for applications where high efficiency is required over the full range of output load conditions. The 2.7V to 5.5V input voltage range makes the AAT1151 ideal for single-cell lithiumion/polymer battery applications. Capable of more than 700mA with internal MOSFETs, the currentmode controlled IC provides high efficiency using synchronous rectification. Fully integrated compensation simplifies system design and lowers external parts count. The device operates at a fixed 850kHz switching frequency and enters PFM mode for light load current to maintain high efficiency across all load conditions. The AAT1151 is available in MSOP-8 and QFN33-16 packages and is rated over the -40°C to +85°C temperature range. www.DataSheet4U.com Features SwitchReg™ VIN Range: 2.7V to 5.5V Up to 95% Efficiency High Initial Accuracy ±1% 110mΩ RDS(ON) Internal Switches <1µA Shutdown Current 850kHz Switching Frequency Fixed VOUT or Adjustable VOUT ≥1.0V Integrated Power Switches Synchronous Rectification Current Mode Operation Internal Compensation Stable with Ceramic Capacitors PWM and PFM for Optimum Efficiency for All Load Conditions Internal Soft Start Over-Temperature Protection Current Limit Protection MSOP-8 and QFN33-16 Packages -40°C to +...