Overview
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.
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
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
PB Free/ROHS
Learn More →
| Documents | Release Date | Type |  |
|---|---|---|---|
| SC221 Datasheet | 2019-02-06 | | |
Applications
- HDTV, Set Top Boxes, Gaming Consoles
- POL Applications
- White Goods
Inventory
| Product | Country | Distributor | Qty | Buy |
|---|
Resources
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The Things Conference 2025, held in Amsterdam, attracted over 2,000 participants, featured 180 speakers and 250 presentations, making it a significant event in the IoT calendar. Semtech was notably prominent, reflecting its leadership in the LoRa® ecosystem. The conference highlighted the growing global adoption of LoRa technology, with Semtech's advancements in LoRa Plus™ and 4th-generation devices underscoring its commitment to innovation and scalability in Internet of Things (IoT) solutions. The event served as a platform for industry leaders to discuss the future of IoT connectivity, emphasizing the role of LoRa in enabling the multiple verticalsrelyingon IoTto enhance operational efficiencies and sustainability.
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The Things Conference 2025: LoRa® Ecosystem…Talk With Us Today
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