Switching Regulators
  • SC187
    • 4A, 2.2MHz Synchronous Step-Down Regulator with 15 Preset Output Voltages
  • SC220
    • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC220Q
    • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC2308A
    • 600kHz Step-Up Switching Regulator with 2.2A, 45V Switch
  • SC284
    • Dual Channel 2.5MHz, 1.8A Synchronous Step-Down Regulator
  • SC3102
    • 2A Synchronous Step-Down Regulator
  • SC401B
    • 15A Integrated FET Regulator with Programmable LDO
  • SC402B
    • 10A EcoSpeed® Integrated FET Regulator with Programmable LDO
Semtech SC4530

Semtech SC4530

30V, 300mA Output Micropower Step-Down Switching Regulator

The SC4530 is a micropower hysteretic current-mode step-down switching regulator capable of providing up to 300mA of output current from 3V to 30V input voltage range. It is designed to provide very high standby efficiency while simplifying design.

Features


  • Input Voltage Range: 3V to 30V
  • Low Quiescent Current: Drawing 19mA from VIN when
  • Stepping Down from 12V to 3.3V at No Load
  • High Efficiency from 12V Input to 5V Output
  • > 80% at 650uA
  • > 85% at 10mA - 300mA
  • Up to 300mA Continuous DC Output Current
  • Integrated Power Switch and Schottky Diodes
  • Low Output Ripple
  • <1mA Shutdown Current
  • Hysteretic Current-Mode Control
  • Cycle-by-Cycle Current Limiting
  • Alternating Between Micropower Idling and Switching
  • States at Light Loads to Conserve Power
  • Output Short-Circuit Protection
  • Solution Footprint as Small as 50mm2
  • Low-Profile 3mm x 2mm MLPD 8-Lead Package

Applications


  • Portable Equipment
  • Notebook Computers
  • Distributed Supplies
  • Backup Power Supplies

Packaging

  • 3mm x 2mm MLPD 8-Lead

Order Codes

  • SC4530WLTRT - Lead-free, WEEE and RoHS compliant