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Semtech SC284AQ

Semtech SC284AQ

Dual Channel 2.5MHz, 1.7A Synchronous Buck Regulator

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The SC284AQ is a dual channel 1.7A synchronous stepdown regulator designed to operate with an input voltage range of 2.75 to 5.5 Volts. Each channel offers seven pre-determined output voltages via three control pins programmable from 1.0 to 3.3 Volts. The control pins allow for on-the-fly voltage changes, enabling system designers to implement dynamic power savings. The SC284AQ is also capable of adjusting the output voltage via an external resistor divider.


  • VIN Range — 2.75 – 5.5V
  • VOUT Selectable — 1.0 - 3.3V
  • Up to 1.7A Output Current for Each Channel
  • Package with Ultra-Small Footprint : 3 x 3 x 0.75(mm)
  • Switching Frequency — 2.5MHz
  • Efficiency Up to 94%
  • Low Output Noise in CCM
  • Excellent Transient Response
  • Start Up into Pre-Biased Output
  • 100% Duty-Cycle Low Dropout Operation
  • Shutdown Current — <1μA
  • Internal Soft-Start
  • Input Under-Voltage Lockout
  • Output Over-Voltage, Current Limit Protection
  • Over-Temperature Protection
  • VOUT Further Adjustable Using External Resistors
  • PGOOD Feature
  • Lead-free, Halogen-free, and RoHS/WEEE Compliant
  • AEC-Q100 (Grade-2) Qualified, See Derating Curve on Page 15 for Application Information.


  • Desktop Computing
  • Set-Top Box
  • LCD TV
  • Network Cards
  • Automotive Car Navigation/Infotainment


  • 3 x 3 x 0.75(mm) MLPQ-W20

Order Codes

  • SC284AQWLTRT, Lead-free, Halogen-free, RoHS/WEEE Compliant, 3000 pcs, tape & reel
  • SC284AQEVB: SC284AQ Evaluation Board
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