Semtech SC221
20MHz, 650mA, X-EMI®-Enabled Synchronous Step-Down Regulator

Not recommended for new designs.
Overview
Features
- Patented X-EMI® 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
Applications
- HDTV, Set Top Boxes, Gaming Consoles
- POL Applications
- White Goods
Packaging
- MLPD-UT 8 Lead package - 3,000 pcs. Tape & Reel only.
Order Codes
- SC221ULTRT - Lead-free, halogen-free, and RoHS/WEEE compliant.
- SC221EVB - Evaluation Board