Switching Regulators
  • SC21152
  • Tiny 1.2A Synchronous Buck Regulator with Power Good
  • TS13101
  • Galvanic Isolated Latching 60V Power Load Switch
  • TS30011
  • High Efficiency 1A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
  • TS30012
  • High Efficiency 2A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
  • TS30013
  • High Efficiency 3A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
  • TS30111
  • High Efficiency 700mA Current-Mode Synchronous Buck DC/DC Converter, 1MHz
  • TS32101
  • High Efficiency DC/DC Boost Converter for USB, 2Mhz
  • TS33000
  • High Efficiency Synchronous DC/DC Buck Converter
Semtech SC4525D

Semtech SC4525D

18V, 3A, 350kHz Step-Down Switching Regulator

Add to Watch List

Not Recommended for New Designs, Recommended Replacement Part is SC4525FSETRT

The SC4525D is a 350kHz constant frequency peak current-mode step-down switching regulator capable of producing 3A output current from an input ranging from 3V to 18V. The SC4525D is suitable for next generation XDSL modems, high-definition TVs and various point of load applications.

To convert your designs from SC4525B, please refer to our

"SC4525A/B to SC4525C/D Design Guide"


  • Input range: 3V to 18V
  • 3A Output Current
  • 350kHz Fixed Switching Frequency
  • Precision 1V Feedback Voltage
  • Peak Current-Mode Control
  • Cycle-by-Cycle Current Limiting
  • Hiccup Overload Protection with Frequency Foldback
  • Soft-Start and Enable
  • Thermal Shutdown
  • Thermally Enhanced 8-pin SOIC Package
  • Fully RoHS and WEEE compliant


  • XDSL and Cable Modems
  • Set Top Boxes
  • Point of Load Applications
  • CPE Equipment
  • DSP Power Supplies
  • LCD and Plasma TVs


  • SOIC-8 EDP

Order Codes

  • SC4525DSETRT: (SOIC-8 EDP) Lead Free, WEEE and RoHS Compliant, Halogen-free, 2,500 pcs, Tape and Reel only.
  • SC4525DEVB: Evaluation Board
- Close -
Add Product to Watch List

Please login to the mySemtech member site to add products to your personal Watch List.

If you're not registered for mySemtech, please Register now. mySemtech member benefits include pre-filled forms for quick and easy online ordering, technical support, new product information and more.