SC9301 10A EcoSpeed Integrated FET Regulator with 5V LDO and Hiccup Restart POWER MANAGEMENT Features Description Power system The SC9301 is a stand-alone synchronous EcoSpeed buck Input voltage 3V to 28V regulator with adaptive on-time control architecture. It Bias Voltage 5V LDO or 3V to 5.5V external features integrated power MOSFETs, a bootstrap switch, Up to 96% peak effi ciency and a fi xed 5V LDO in a 5x5mm package. The device is Integrated bootstrap switch highly effi cient and uses minimal PCB area. The SC9301 LDO output current up to 200mA supports using standard capacitor types such as electro- Reference tolerance 1% T = -40 to +125 C J lytic or specialty polymer, in addition to ceramic, at switch- EcoSpeed architecture with pseudo-fi xed fre- ing frequencies up to 1MHz. quency adaptive on-time control Additional features include programmable cycle-by-cycle Pre-bias start-up current limit protection, programmable soft-start, under Logic input and output control and over-voltage protection, automatic fault recovery Independent enable control for LDO and (hiccup restart), and soft shutdown. The device also pro- switcher vides separate enable inputs for the PWM controller and Programmable V UVLO threshold IN LDO as well as a power good output for the PWM Power good output controller. Programmable soft-start time All protection: automatic restart on fault Over-voltage and under-voltage TC compensated R sensed current limit DS(ON) 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 Typical Application Circuit EN ILIM RILIM ENL LXS RTON PGOOD PGOOD TON VOUT L1 VDD SC9301 VOUT LX 1 F CSOFT SS RFB1 + COUT FB VIN VIN RFB2 CIN CBST Semtech Corporation Rev. 2.1 1 BST LXBSTSC9301 Pin Confi guration Ordering Information Device Package (1)(2) SC9301MLTRT MLPQ-32, 5 x 5(mm) SC9301EVB Evaluation Board 32 31 30 29 28 27 26 25 Top View Notes: 1 24 FB LX 1) Available in tape and reel only. A reel contains 3000 devices. 23 VOUT 2 LX AGND 2) Lead-free packaging only. Device is WEEE and RoHS compliant PAD 1 3 22 VDD PGND and halogen-free. AGND 4 21 PGND LX PAD 3 5 20 PGND VLDO 19 VIN 6 PGND VIN PAD 2 SS 7 18 PGND 8 17 BST PGND 9 10 11 12 13 14 15 16 MLPQ-UT32 Marking Information 9301 yyww xxxx yyww = Date Code xxxx = Semtech Lot Number 2 VIN ENL VIN TON VIN AGND DH EN LXBST LXS DL ILIM PGND PGOOD PGND LX