Switching Regulators
  • SC195F
  • 3.5MHz, 500mA Synchronous Step Down DC-DC Regulator
  • SC202F
  • 3.5MHz, 500mA Step-down Regulator with Integrated Inductor
  • SC21150
  • Tiny 1.2A Synchronous Buck Regulator
  • SC21152
  • Tiny 1.2A Synchronous Buck Regulator with Power Good
  • SC221
  • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC284AQ
  • Dual Channel 2.5MHz, 1.7A Synchronous Buck Regulator
  • TS13101
  • Galvanic Isolated Latching 60V Power Load Switch
  • TS30011
  • High Efficiency 1A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
Semtech SC401B

Semtech SC401B

15A Integrated FET Regulator with Programmable LDO

Add to Watch List

The SC401B is a stand-alone synchronous EcoSpeedTM buck power supply which incorporates Semtech’s advanced patented adaptive on-time control architecture.


  • Power System
    • Input voltage — 3V to 17V
    • Bias voltage — 3V to 5.5V LDO or external
    • Up to 96% peak efficiency
    • Integrated bootstrap switch
    • Programmable LDO output — 200mA
    • Reference tolerance — 1% TJ= -40 to +125 °C
    • Programmable soft-start time
  • Logic Input/Output Control
    • Independent EN controls for LDO and switcher
    • Programmable VIN UVLO threshold
    • Power good output
    • Selectable PSAVE or FCM mode
  • Protection
    • Over-voltage and under-voltage
    • TC compensated RDS(ON) sensed current limit
    • Thermal Shutdown
  • Output Capacitor Types
    • High ESR — SP, POSCAP, OSCON
    • Ceramic capacitors
  • Package
    • Lead-free package — 5x5mm, 32-Pin MLPQ
    • RoHS/WEEE compliant and Halogen free


  • Networking and telecommunication equipment
  • Printers, DSL, and STB applications
  • Embedded systems and power supply modules
  • Point of load power supplies


  • MLPQ 32-Pin - 5x5mm

Order Codes

- 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.