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SC9301 Datasheet(PDF) 1 Page - Semtech Corporation |
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SC9301 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 29 page  © Semtech Corporation 1 SC9301 10A EcoSpeed ® Integrated FET Regulator with 5V LDO and Hiccup Restart Features Power system Input voltage — 3V to 28V Bias Voltage — 5V LDO or 3V to 5.5V external Up to 96% peak efficiency Integrated bootstrap switch LDO output current — up to 200mA Reference tolerance — 1% T J = -40 to +125 °C EcoSpeed® architecture with pseudo-fixed fre- quency adaptive on-time control Pre-bias start-up Logic input and output control Independent enable control for LDO and switcher Programmable V IN UVLO threshold Power good output Programmable soft-start time All protection: automatic restart on fault Over-voltage and under-voltage TC compensated R DS(ON) sensed current limit Thermal shutdown Smart gate drive reduces EMI Capacitor types: SP, POSCAP, OSCON, and ceramic Package — 5 x 5(mm), 32-pin MLPQ Lead-free and halogen-free RoHS and WEEE compliant Applications Networking and telecommunication equipment Printers, DSL, and STB applications Point-of-load power supplies and module replacement • • • • • • • • • • • • • • • Description The SC9301 is a stand-alone synchronous EcoSpeed ® buck regulator with adaptive on-time control architecture. It features integrated power MOSFETs, a bootstrap switch, and a fixed 5V LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area. The SC9301 supports using standard capacitor types such as electro- lytic or specialty polymer, in addition to ceramic, at switch- ing frequencies up to 1MHz. Additional features include programmable cycle-by-cycle current limit protection, programmable soft-start, under and over-voltage protection, automatic fault recovery (hiccup restart), and soft shutdown. The device also pro- vides separate enable inputs for the PWM controller and LDO as well as a power good output for the PWM controller. Rev. 2.0 POWER MANAGEMENT Typical Application Circuit RTON SC9301 FB VOUT VDD VIN SS LX PGOOD ILIM LXS EN ENL RILIM CBST + RFB1 RFB2 VOUT COUT L1 CIN VIN PGOOD TON 1μF CSOFT |
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