SC4624A

POWER MANAGEMENT Description Low Input Voltage, High Efficiency, 4A Integrated www.DataSheet4U.com FET Synchronous Step down DC/DC Regulator 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 4X4mm MLPQ-20 packages- WEEE and RoHS compliant SC4624A The SC4624A is a highly integrated synchronous stepdown 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 efficiency up to 95%. A power good pin is available to monitor the output voltage status. Operating frequency is adjustable from 200 kHz to 2MHz with a single resistor and it can be synchronized to an external clock. The SC4624A offers adjustable current limit, soft start and over temperature protection to safeguard the device under extreme operating conditions. The soft start provides a controlled output voltage ramp up at startup. When a logic low is applied to the Enable pin, the SC4624A enters the shutdown mode and it consumes l...