Switching Regulators
  • SC417
    • 10A Integrated FET Regulator with Programmable LDO and Selectable Ultrasonic Power-Save
  • SC427
    • 10A Integrated FET Regulator with Programmable LDO and Selectable Regular Power-Save
  • SC122
    • Low Voltage Synchronous Boost Converter
  • SC121
    • Low Voltage Synchronous Boost Regulator
  • SC561
    • Dual Output Low Noise LDO Linear Regulator
  • SC810
    • Single Input/Single Mode Single-cell Li-ion Battery Charger
  • SCDAS4F
    • Standard Recovery, High Current Center Tap and Doubler Rectifier Assemblies
Semtech SC122

Semtech SC122

Low Voltage Synchronous Boost Converter

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.

Features


  • 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

Applications


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

Packaging

  • MLPD-UT-6 (1.5x2)

Order Codes

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