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 SC4608

Semtech SC4608

High Efficiency Synchronous Step Down Controller

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The SC4608 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from an input supply range of 2.7V to 5.5V. A high level of integration reduces external component count, and makes it suitable for low voltage applications where cost, size and efficiency are critical.


  • Asynchronous start up
  • Programmable switching frequency up to 1MHz
  • BiCMOS voltage mode PWM controller
  • 2.7V to 5.5V input voltage range
  • Output voltage as low as 0.5V
  • +/-1% reference accuracy
  • Sleep mode (Icc = 1μA max)
  • Adjustable lossless short circuit current limiting
  • Combination pulse by pulse & hiccup mode current limit
  • High efficiency synchronous switching
  • 1A peak current driver
  • External soft start
  • Power good signal
  • 16-pin MLP Lead-free package. This product is fully WEEE and RoHS compliant


  • Distributed power architecture
  • Servers/workstations
  • Local microprocessor core power supplies
  • DSP and I/O power supplies
  • Battery-powered applications
  • Telecommunications equipment
  • Data processing applications



Order Codes

  • SC4608MLTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
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