ADP1822

Data Sheet PWM, Step-Down DC-to-DC Controller with Margining and Tracking ADP1822 FEATURES Wide power input voltage range: 1 V to 24 V Chip supply voltage range: 3.7 V to 5.5 V Wide output voltage range: 0.6 V to 85% of input voltage 1% accuracy, 0.6 V reference voltage Output voltage margining control Output voltage tracking All N-channel MOSFET 300 kHz, 600 kHz, or up to 1.2 MHz synchronized frequency No current sense resistor required Power-good output Programmable soft start with reverse current protection Current-limit protection Thermal overload protection Overvoltage protection Undervoltage lockout 1 µA shutdown supply current Small, 24-lead QSOP package APPLICATIONS Telecommunications and networking systems High performance servers Medical imaging systems DSP core power supplies Microprocessor core power supplies Mobile communication base stations Distributed power GENERAL DESCRIPTION The ADP1822 is a versatile and inexpensive synchronous voltagemode PWM step-down controller...