500mA Low Voltage Step-Down Synchronous Switching Regulator Features: 500mA Output Current at 3.3V Output Up to 92% Peak Efficiency Internal Reference Trimmed to 1% Output Can Source or Sink Current Requires as Few as Four External Components Input Voltage Range: 4V to 10V Adjustable Current Limit Small SO-8 Package 200kHz Switching Frequency Can be Synchronized Up to 500kHz