Switching regulator provides adjustable, fixed output voltages

Microchip Technology developed the MCP1603; a 2 MHz, 500 mA switching regulator. This low-power switcher provides adjustable- and fixed-output voltages, undervoltage lockout (UVLO) and automatic pulse-width-modulation- (PWM) to pulse-frequency-modulation- (PFM) mode transition in thin SOT-23 (TSOT-23) and 2 x 3-mm DFN packages.