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
  • 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
Semtech SC122

Semtech SC122

Low Voltage Synchronous Boost Converter

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The SC122 is a high efficiency, low noise, synchronous step-up DC-DC converter. It produces a fixed 3.3V output from a single cell alkaline or NiMH battery. It features an internal 1.2A switch and synchronous rectifier to achieve high efficiency and to eliminate the need for an external Schottky diode.


  • Input voltage - 0.7V to 1.6V
  • Minimum start-up voltage - 0.85V
  • Output voltage fi xed at 3.3V
  • Peak input current limit - 350mA typically
  • Output current 95mA at VIN = 1.6V, 50mA at VIN = 0.9V
  • Efficiency up to 80%
  • Internal synchronous rectifier
  • Switching frequency - 1.2MHz
  • Power save (voltage hysteretic) control
  • Anti-ringing circuit
  • Operating supply current (measured at OUT) - 40μA
  • No forward conduction path during shutdown
  • MLPD-UT-6 1.5 x 2.0 x 0.6 (mm) package
  • Lead-free and halogen-free WEEE and RoHS compliant


  • Electric toothbrushes
  • Personal medical products
  • Single-cell alkaline, NiCd, or NiMH applications


  • MLPD-UT-6 (1.5x2)

Order Codes

  • SC122ULTRT: Lead Free, Halogen-free, WEEE and RoHS Compliant, 3000 pcs, Tape and Reel only
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