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