General Description
The APW7101 is a high efficiency monolithic synchronous buck regulator. APW7101 operates with a constant 1.5MHz switching frequency and using the inductor current as a controlled quantity in the current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V. The 2.5V to 5.5V input voltage range makes the APW7101 ideally suited for single Li-Ion battery powered applications.

Features
• 600mA Output Current
• 2.5V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• Low Dropout Operation at 100% Duty Cycle
• Synchronous Topology: No Schottky Diode Required
• 0.6V Low Reference Voltage
• Shutdown Mode Supply Current Under 1μA
• Current Mode Operation for Excellent Line and Load Transient Response
• Over-Temperature Protection
• Over Current Protection
• SOT-23-5 Package
• Lead Free and Green Devices Available (RoHS Compliant)

Applications
• Cellular Telephones
• Personal Information Appliances
• Wireless and DSL Modems
• MP3 Players
• Digital Still Cameras
• Portable Instruments