The UCC3882 combines high precision reference and voltage monitoring circuitry with average current mode PWM synchronous rectification controller circuitry to power high-end microprocessors with a minimum of external components. The UCC3882 converts 5 V or 12 V to an adjustable output ranging from 1.8VDC to 2.05VDC in 50 mV steps and 2.1VDC to 3.5VDC in 100 mV steps with 1% DC system accuracy.