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
  • 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
  • SC1176
  • Dual Synchronous Voltage-Mode Controller with Current-Sharing Circuitry
Semtech SC1104B

Semtech SC1104B

Simple, Synchronous Voltage-Mode PWM Controller

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The SC1104A/B is a versatile voltage-mode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed frequency high efficiency buck regulator can be implemented using the SC1104A/B with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side switch. The small device footprint allows for compact circuit design.


  • Up to +14 V input, 300 kHz operation (SC1104A)
  • Up to +7 V input, 600 kHz operation (SC1104B)
  • High efficiency (> 90%)
  • 1% reference voltage accuracy
  • Hiccup mode over-current protection
  • Robust output drive
  • RDS(ON) Current sensing
  • Industrial temperature range
  • 8-Lead SOIC package. Pb-free package available, fully WEEE and RoHS compliant


  • Termination supplies
  • Low-cost microprocessor supplies
  • Peripheral card supplies
  • Industrial power supplies
  • High-density DC/DC conversion



Order Codes

  • SC1104BISTR: Package Minimum Tape & Reel Only
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