Just as I was tuning an NCP3063 today, I see this: MCP16301 Up to 96% Typical Efficiency Input Voltage Range: 4.0V to 30 Output Voltage Range: 2.0V to 15V Integrated N-Channel Buck Switch 600 mA Output Current 500 kHz Fixed Frequency Adjustable Output Voltage Internal Compensation Stable with Ceramic Capacitors Internal Soft-Start Cycle by Cycle Peak Current Limit Under Voltage Lockout (UVLO): 3.5V SOT-23-6 Looks pretty good to me. Link to microchip page: http://goo.gl/NMIbw --=20 Martin K. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .