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 SC1189

Semtech SC1189

Programmable Synchronous DC/DC Converter, Dual LDO Controller

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The SC1189 combines a synchronous voltage mode controller with two low-dropout linear regulators providing most of the circuitry necessary to implement three DC/DC converters for powering advanced microprocessors such as Pentium®III.


  • Synchronous design, enables no heatsink solution
  • 95% efficiency (switching section)
  • 5-bit DAC for output programmability
  • Designed for Intel Pentium® III requirements
  • 1.25 V, 2.5 V short-circuit-protected linear controllers
  • Linear controllers adjustable to 1.8 V chipset.
  • VRM 8.5 Compliant
  • VRM 8.4 Compliant (1.3 V to 1.8 V)
  • 1.0% accuracy (1.6 V to 1.8 V)
  • On-chip power-good signal
  • Available in Lead free package, fully WEEE and RoHS compiant


  • Pentium® III microprocessor supplies
  • 1.050 V to 1.825 V microprocessor supplies
  • Programmable triple power supplies



Order Codes

  • SC1189SWTR: Package Minimum Tape & Reel Only
  • SC1189SWTRT: Lead-free, RoHS and WEEE compliant, 1000 pcs. Tape & Reel
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