SC221中文资料20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator数据手册Semtech规格书

描述 Description

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. X-EMI™ inductor technology enables inductors to be drawn directly on the PC board. This technology meets or exceeds the EMI performance of chip inductors and eliminates the need for discrete inductors.

特性 Features

·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
·Protection Features 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 Compliant

应用 Application

·HDTV, Set Top Boxes, Gaming Consoles
·POL Applications
·White Goods