Overview

The SC4905A/B is a 10 pin BICMOS primary side voltage mode controller for use in Isolated DC-DC and off-line switching power supplies.

Packaging

  • MSOP-10

Order Codes

  • SC4905BIMSTR: Package Minimum Tape & Reel Only
  • SC4905BIMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only

PB Free/ROHS

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Features

  • Operation to 1 MHz
  • Accurate programmable maximum duty cycle
  • Integrated oscillator/voltage feed forward compensation
  • Line voltage monitoring
  • External frequency synchronization
  • Bi-phase mode of operation for ripple reduction
  • Under 100 µA start-up current
  • Accessible reference voltage
  • VDD under-voltage lockout
  • -40°C to +105°C operating temperature
  • 10-lead MSOP package

Applications

  • Telecom equipment and power supplies
  • Networking power supplies
  • Power over LAN applications
  • Industrial power supplies
  • Isolated power supplies

Inventory

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