PWM Controllers
  • SC508A
    • EcoSpeed® DC-DC Buck Controller with Integrated LDO
  • SC508
    • EcoSpeed® DC-DC Buck Controller with Integrated LDO
  • SC493
    • EcoSpeed® Step-down Controller with I2C Interface
  • SC418
    • EcoSpeed® DC-DC Buck Controller with Programmable LDO
  • SC4911
    • Bias/Primary Side PWM Controller with Ultra-Low Start-up Current
  • SC4910B
    • High-Performance Secondary Side Controller with Synchronous Rectifier
  • SC4910A
    • High-Performance Secondary Side Controller with Synchronous Rectifier
  • SC4905B
    • High-Performance Voltage-Mode PWM Controller
Semtech SC419

Semtech SC419

Single Phase DC-DC Converter with Integrated Boost Diode

The SC419 is a synchronous buck power supply controller. It features a bootstrap switch in a space-saving MLPQ- 3x3mm 20-pin package. The device is highly effi cient and uses minimal PCB area. It uses pseudo-fi xed frequency adaptive on-time operation to provide fast transient response.

Features


  • Input voltage — 3V to 28V
  • Integrated bootstrap switch
  • Smart power-save protection
  • TC compensated RDS(ON)
  • Pseudo-fi xed frequency adaptive on-time control
  • Designed for use with ceramic capacitors
  • Programmable VIN UVLO threshold
  • Enable input
  • Selectable power-save mode
  • Programmable ultra-sonic power-save
  • Internal soft-start and soft-shutdown at output
  • Internal reference — 1% tolerance
  • Over-voltage/under-voltage fault protection
  • Power good output
  • SmartDrive™
  • Lead-free 3x3mm, 20-Pin MLPQ package
  • Fully WEEE and RoHS compliant

Applications


  • Notebook, desktop, tablet, and server computers
  • Networking and telecommunication equipment
  • Printers, DSL, and STB applications
  • Embedded applications
  • Power supply modules
  • Point of load power supplies

Packaging

MLPQ-20

Order Codes

  • SC419ULTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
  • SC419EVBL: SC419 Evaluation Board