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 SC4808B-2

Semtech SC4808B-2

High-Performance Dual Ended PWM Controller

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The SC4808B-2 is a dual-ended, high frequency, integrated PWM controller, optimized for isolated applications that require minimum space. It can be configured for current or voltage mode operation with required control circuitry where secondary side error amplifier is used.


  • 120μA starting current
  • Pulse by pulse current limit
  • Programmable operation up to 1MHz
  • Internal soft start
  • Programmable line undervoltage lockout
  • Over current shutdown
  • Dual output drive stages on push-pull configuration
  • Programmable internal slope compensation
  • Programmable mode of operation (peak current mode or voltage mode)
  • External frequency synchronization
  • Bi-phase mode of operation
  • -40 to 105 °C operating temperature
  • MSOP-10 lead free package. This product is fully WEEE and RoHS compliant


  • Telecom equipment and power supplies
  • Networking power supplies
  • Industrial power supplies
  • Push-pull converter
  • Half bridge converter
  • Full bridge converter
  • Isolated VRM's



Order Codes

  • SC4808B-2MSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
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