SC4502: 1.4 Amp, 2 MHz Step-Up Switching Regulator with Soft-Start

The SC4502 is a high-frequency current-mode step-up switching regulator with an integrated 1.4A power transistor. Its high switching frequency (programmable up to 2MHz) allows the use of tiny surface-mount external passive components. Programmable soft-start eliminates high inrush current during start-up.


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Features

  • Low saturation voltage switch: 210mV (250mV for the SC4502H)
  • Constant switching frequency current-mode control
  • Programmable switching frequency up to 2 MHz
  • Soft start function
  • Input voltage range from 1.4 V to 16 V
  • Output voltage up to 32V (40V for the SC4502H)
  • Low shutdown current
  • Adjustable under-voltage lock-out threshold
  • Small low-profile thermally-enhanced MLPD-10 package

Diagrams

Typical Application Circuit

SC4502 - Typical Application Circuit

Click diagram to enlarge

Applications

  • Flat screen LCD bias supplies
  • TFT bias supplies
  • XDSL power supplies
  • Medical equipment
  • Digital video cameras
  • Portable devices
  • White LED power supplies

Packaging

MLPD-10

Order Codes

  • SC4502MLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
Order Sample Button
Pb-Free/RoHS/WEEE Status

Related Documents

Datasheets