General Description
The AAT2503 is a three-channel regulator consisting of a step-down converter with an input voltage range of 2.7V to 5.5V plus two low dropout (LDO) linear regulators.
FEATUREs
• 800mA Step-Down Converter
— VIN Range: 2.7V to 5.5V
— VOUT Range: 0.9V to VIN
— High Efficiency
— 2MHz Switching Frequency
• Two 150mA Low Dropout Regulators
— VOUT Range: 0.6V to VIN
— High Output Accuracy: ±1.5%
• 85µA of Total IQ
• Independent Enable Pins
• Integrated Power MOSFETs
• Over-Temperature and Current Limit
Protection
• QFN34-20 Package
• -40°C to +85°C Temperature Range
APPLICATIONs
• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor/DSP Core/IO Power
• PDAs and Handheld Computers