PWM Controllers
  • SC508A
    • EcoSpeed® DC-DC Buck Controller with Integrated LDO
  • SC508
    • EcoSpeed® DC-DC Buck Controller with Integrated LDO
  • SC493
    • EcoSpeed® Step-down Controller with I2C Interface
  • SC419
    • Single Phase DC-DC Converter with Integrated Boost Diode
  • SC418
    • EcoSpeed® DC-DC Buck Controller with Programmable LDO
  • SC4911
    • Bias/Primary Side PWM Controller with Ultra-Low Start-up Current
  • SC4910B
    • High-Performance Secondary Side Controller with Synchronous Rectifier
  • SC4910A
    • High-Performance Secondary Side Controller with Synchronous Rectifier
Semtech SC1189

Semtech SC1189

Programmable Synchronous DC/DC Converter, Dual LDO Controller

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.

Features


  • 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

Applications


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

Packaging

SOIC-24

Order Codes

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