Switching Regulators
  • SC195F
  • 3.5MHz, 500mA Synchronous Step Down DC-DC Regulator
  • SC202F
  • 3.5MHz, 500mA Step-down Regulator with Integrated Inductor
  • SC21150
  • Tiny 1.2A Synchronous Buck Regulator
  • SC21152
  • Tiny 1.2A Synchronous Buck Regulator with Power Good
  • SC21154
  • Tiny 1.2A Synchronous Buck Regulator with Programmable Soft Start
  • SC221
  • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC284A
  • Dual Channel 2.5MHz, 2.0A Synchronous Buck Regulator
  • SC284AQ
  • Dual Channel 2.5MHz, 1.7A Synchronous Buck Regulator
Semtech SC185

Semtech SC185

4A Synchronous Step-Down Regulator

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The SC185 is a 4A synchronous step-down regulator designed to operate with an input voltage range of 2.9V to 5.5V. The device requires only three external filter components for a complete a step down regulator solution. The output voltage is factory predetermined with an available range of 1.0V to 3.3V.


  • VIN Range: 2.9 - 5.5V
  • VOUT Options: 1.0V to 3.3V
  • Up to 4A Output Current
  • Ultra-Small Footprint, <1mm Height Solution
  • 1.5MHz Switching Frequency
  • Optional Power Save Mode Operation
  • Efficiency Up to 95%
  • Low Output Noise Across Load Range
  • Excellent Transient Response
  • Start Up into Pre-Bias Output
  • 100% Duty-Cycle Low Dropout Operation
  • <1μA Shutdown Current
  • Externally Programmable Soft Start Time
  • Power Good indicator
  • Input Under-Voltage Lockout
  • Output Over-Voltage, Current Limit Protection
  • Over-Temperature Protection
  • 3mm x 3mm x 0.6mm thermally enhanced
  • MLPQ-UT16 package
  • -40 to +85°C Temperature Range
  • Pb-free, Halogen free, and RoHS/WEEE compliant


  • Desktop Computing
  • Set-Top Box
  • LCD TV
  • Network Cards
  • Printer


  • MLPQ-UT16

Order Codes

  • SC185xULTRT
  • SC185xEVB: SC185x Evaluation Board
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