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 SC1109

Semtech SC1109

Synchronous PWM Controller With Dual Low-Dropout Regulator Controllers

Features


  • Dual linear controllers
  • LDOs track input voltage within 200 mV (function of the MOSFETs used) until regulation
  • Integrated drivers
  • Power-good signal (SC1109A, SC1109B)
  • Soft start
  • Lossless current sense
  • Programmable over-current limit (SC1109C)
  • Fixed frequency 200 kHz (SC1109A, SC1109C)
  • Fixed frequency 500 kHz (SC1109B)
  • SO-16 package

Applications


  • Pentium® III Motherboards
  • Triple power supplies

Packaging

SOIC-16

Order Codes

  • SC1109ACSTR: Package Minimum Tape & Reel Only
  • SC1109ACSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only