Semtech Corporation SC221
Synchronous Step-Down Regulator
FEATURES
DESCRIPTION
Patented X-EMITM Inductor Technology Enables Trace Inductors in PC Board Material Excellent EMI Performance Efficiency up to 90% 17.5µA Quiescent Current under Very Light Loads Wide Input Voltage Range — 2.7V to 5.5V Adjustable Output Voltage Down to 1.0V Output DC Current — up to 650mA High Light-load Efficiency via Automatic PSAVE Mode Ultra-fast Transient Response — <1µs Temperature Range — -40 to +85°C Shutdown Current — 0.1µA (typical) Requires Tiny 220nH Inductor Requires Only 1μF of Output Capacitance External Switching Frequency Synchronization ProtectionFEATURES
Including Over-Current Protection Output Short-Circuit Protection Thermal Shutdown Protection Offered in MLPD-UT 8 Lead Packages Lead-free, Halogen-free, and RoHS/WEEE CompliantAPPLICATIONS
HDTV, Set Top Boxes, Gaming Consoles POLAPPLICATIONS
White Goods The SC221 is a 20MHz X-EMI™(1)-enabled step-down regulator optimized for power low voltage rails from 2.7 to 5.5V input voltage.