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 SC4911

Semtech SC4911

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

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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
 
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