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
  • SC221
  • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC284AQ
  • Dual Channel 2.5MHz, 1.7A Synchronous Buck Regulator
  • TS13101
  • Galvanic Isolated Latching 60V Power Load Switch
  • TS30011
  • High Efficiency 1A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
  • TS30012
  • High Efficiency 2A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
Semtech SC21152

Semtech SC21152

Tiny 1.2A Synchronous Buck Regulator with Power Good

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The SC21152 is an ultra high efficiency 1.2A DC/DC buck regulator available in a small MLPD package. These features make the SC21152 perfect for small form factor consumer applications where high efficiency is essential. SC21152 is an Adaptive On-Time 4MHz switching regulator at full load conditions. Under light load conditions it transitions into PFM Power Save Mode and reduces switching frequency thus saving energy. High switching frequency operation allows the use of a very small 0.47μH inductor along with small input and output capacitors to minimize overall circuit size.


  • Input voltage range — 2.3V to 5.5V
  • 1.2A continuous output current
  • 4MHz switching frequency
  • Adjustable Output Voltage
  • 1% output voltage accuracy
  • Adaptive On-Time architecture
  • Up to 100% duty cycle
  • Up to 96% peak efficiency
  • Power Save mode for efficient light load operation
  • >90% efficiency 30mA to 75mA
  • 0.1μA shutdown current
  • 21μA quiescent current
  • Power Good Indicator
  • Pre-bias startup protection
  • Internal soft start
  • 1.5mm x 2mm, 6-Lead MLPD package
  • WEEE and RoHS compliant and halogen-free


  • Tablet PCs
  • GPS devices
  • Battery powered equipment
  • Portable devices
  • Smart Phones
  • Wearable Electronics


  • 1.5mm x 2mm MLPD package

Order Codes

  • SC21152AULTRC: Lead-free packaging only. Device is WEEE and RoHS compliant and halogen-free. 3,000 pcs.
  • SC21152EVB: Evaluation Board
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