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
  • SC419
    • Single Phase DC-DC Converter with Integrated Boost Diode
  • 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
Semtech SC451

Semtech SC451

PowerStep IV® Portable IMVP-IV® and IMVP-IV+® Single-Phase Power-Supply Controller

The complete datasheet for this product is restricted to IMVP licensees only. To request a datasheet, email: salesinfo@semtech.com.

Features


  • IMVP-IV™ and IMVP4+™ compliant single-chip solution
  • On-chip CLK_ENABLE# and IMVP4_PWRGD outputs
  • Backward compatible with SC1479
  • High-speed hysteretic controller
  • Single-phase operation
  • Selectable analog or VID-controlled DeeperSleep setting
  • 6-bit VID programmable output
  • Integrated drivers with soft high-side turn-on
  • Programmable softstart
  • Programmable boot voltage
  • Programmable DeeperSleep voltage
  • Under-voltage lockout on VccA
  • Over-voltage protection on CORE
  • Current limit protection on CORE
  • Thermal protection
  • Power-good flag with blanking during VID or DeeperSleep mode changes
  • Automatic powersave at light load
  • TSSOP-28 and TSSOP-38 package options

Applications


  • Low-power notebook and laptop computers
  • Embedded applications

Packaging

TSSOP-38, TSSOP-28

Order Codes

  • SC451ITS38TRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC451ITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only