SC427

SC417/SC427 POWER MANAGEMENT 10A EcoSpeedTM Integrated FET Regulator with Programmable LDO Features Description  Power system: Input voltage — 3V to 28V Integrated bootstrap switch Programmable LDO output — 200mA 1% reference tolerance -40 to +85 °C Selectable internal/external bias power supply EcoSpeedTM architecture with pseudo-fixed fre- quency adaptive on-time control  Logic input/output control Independent control EN for LDO and switcher Programmable VIN UVLO threshold Power good output Selectable ultrasonic/power save methods  Protections Over-voltage/under-voltage TC compensated RDS(ON) sensed current limit Thermal shutdown  Output capacitor types High ESR — SP, POSCAP, OSCON Ceramic capacitors  Package — 5x5mm, 32-pin MLPQ  Lead-free and halogen free  RoHS and WEEE compliant Applications The SC417/SC427 is a stand-alone synchronous EcoSpeedTM buck regulator which incorporates Semtech’s advanced, patented adaptive on-time control architecture to provide excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a bootstrap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal 15x20mm PCB area for a total converter solution. Refer to page 16 for information on the C-SIM simulation tool. The SC417/SC427 supports using standard capacitor types such as electrolytic or special polymer, in addition to ceramic, at switching frequencies up to 1MHz. T...