SC4624 - Semtech Corporation

SC4624 4A Integrated FET Synchronous Step down DC/DC Regulator

The SC4624 is a highly integrated synchronous step-down DC/DC regulator designed for low input voltage range of 2.3V to 5.5 Volts. It can deliver 4A continuous output current with the output voltage as low as 0.5 Volts. The internal low RDS(ON) synchronous power switches eliminate the need for external Schottky diode while delivering overall converter effici.

Features

u VIN Range: 2.3
  – 5.5V u 4A Continuous Output Current u Adjustable Output Voltage 0.5V to Vin u Low RDS(ON) integrated FETs: 75mΩ and 47mΩ u Up to 95% Efficiency u Synchronizable and Programmable Frequency: 200kHz
  – 2MHz u Power Good Monitor u <1µA of Shutdown Current u Programmable Soft Start u Programmable Current Limit u Over Temperature protection u -40 to +85 °C Ambient Temperature Range u Starts into pre-biased output u 4x4mm MLPQ-20 and SOIC-16EDP packagesWEEE and RoHS Compliant A power good pin is available to monitor the output voltage status. Operating frequency is adjustable from .