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 SC2544

Semtech SC2544

High Performance Wide Input Range Dual Synchronous Buck Controller

The SC2544 is a high performance dual PWM controller. It is designed to convert a wide ranged input voltage down to two independent output rails. The SC2544 support “peel off ” tracking for the two outputs at start up which means the two outputs ramp up together till the one with lower output level reaching the regulation.

Features


  • Independent dual-outputs
  • “Peel off “start up tracking Independent dual-outputs
  • Wide input voltage range: 4.5V~28V
  • Adjustable output voltage down to 0.75V
  • Flexible power sequencing with enable and power good output
  • Synchronous Buck topology with voltage mode control
  • Out of phase operation to reduce cost of input capacitor
  • 10V internal regulator for gate driver to deliver high efficiency
  • Programmable switching frequency: 100kHz~300kHz
  • Full protection: UVLO, OVP and programmable OCP
  • No need for current sense resistor
  • Low shutdown current (100nA typical)
  • 24 lead TSSOP and MLPQ packages
  • Fully WEEE and RoHS Compliant

Applications


  • Systems with 4.5V~28V input
  • LCDTV and PDPTV
  • Network and telecom systems

Packaging

TSSOP-24, MLPQ-24

Order Codes

  • SC2544MLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only (MLPQ-24)
  • SC2544TSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only (TSSOP-24)