Switching Regulators
  • SC4524E
  • 28V 2A Step-Down Switching Regulator
  • SC4524F
  • 18V 2A Step-Down Switching Regulator
  • SC4525E
  • 28V 3A Step-Down Switching Regulator
  • SC4525F
  • 18V, 3A, 350kHz Step-Down Switching Regulator
  • SC1102
  • Synchronous Voltage-Mode Controller for Distributed Power-Supply Applications
  • SC1104B
  • Simple, Synchronous Voltage-Mode PWM Controller
  • SC1175
  • Low-Power Dual Synchronous DC/DC Controller with Current-Sharing Circuitry
  • SC1176A
  • Dual Synchronous Voltage-Mode Controller with Current-Sharing Circuitry
Semtech SC220Q

Semtech SC220Q

20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator

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The SC220/Q 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.

Note 1: Purchase of SC220/Q includes royalty-free right to use X-EMI™ inductor technology with no additional cost.


  • Patented X-EMI™ Inductor Technology
    • Enables Trace Inductors in PC Board Material
    • Excellent EMI Performance
  • Efficiency up to 90%
  • 19μA Quiescent Current under Very Light-load
  • 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 Effi ciency 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 SOIC 8 Lead Package
  • Lead-free, Halogen-free, and RoHS/WEEE Compliant
  • AEC-Q100 Qualified Version Available


  • HDTV, Set Top Boxes, Gaming Consoles
  • POL Applications
  • White Goods
  • Automotive AEC-Q100 Qualified Applications


  • SOIC 8 Lead

Order Codes

  • SC220STRT: (SOIC-8 EDP) Lead Free, WEEE and RoHS Compliant, Halogen-free, 2,500 pcs, Tape and Reel only
  • SC220STRTQ: (SOIC-8 EDP) Lead Free, WEEE and RoHS Compliant, Halogen-free, 2,500 pcs, Tape and Reel only
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