PWM Controllers
  • SC1102
  • Synchronous Voltage-Mode Controller for Distributed Power-Supply Applications
  • SC1103
  • Asynchronous Voltage-Mode PWM Controller for 12 V Input
  • SC1104A
  • Not Recommended For New Designs
  • SC1104B
  • Simple, Synchronous Voltage-Mode PWM Controller
  • SC1109
  • Synchronous PWM Controller With Dual Low-Dropout Regulator Controllers
  • SC1110
  • Sink and Source DC/DC Controller For Termination Power Supply Applications
  • SC1116
  • Linear FET Controller for DDR Supplies
  • SC1175
  • Low-Power Dual Synchronous DC/DC Controller with Current-Sharing Circuitry
Semtech SC4911

Semtech SC4911

Bias/Primary Side PWM Controller with Ultra-Low Start-up Current

Add to Watch List

The SC4911 is a highly integrated bias/primary side PWM controller designed for off-line or isolated dc-dc converters in telecommunication and data communication applications. The high degree of integration minimizes the amount of discrete parts needed and leads to substantial cost and space saving converter designs.

Features


  • Programmable switching frequency up to 500kHz
  • Line UVLO Protection
  • Undervoltage Lockout
  • Low startup current (45μA)
  • Cycle by cycle current limit
  • 8 pin MSOP. Available in Lead-free, fully WEEE and RoHS compliant

Applications


  • Telecom isolated converters
  • Offline isolated power supplies
  • Instrumentation power supplies
  • Battery chargers

Packaging

MSOP-8

Order Codes

  • SC4911AMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC4911BMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC4911IMSTR: Package Minimum Tape & Reel Only
  • SC4911IMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
 
- Close -
Add Product to Watch List

Please login to the mySemtech member site to add products to your personal Watch List.

If you're not registered for mySemtech, please Register now. mySemtech member benefits include pre-filled forms for quick and easy online ordering, technical support, new product information and more.