Description

The SC4525A is a constant frequency peak current-mode step-down switching regulator capable of producing 3A output current from an input ranging from 8V to 28V. The switching frequency of the SC4525A is programmable up to 2MHz, allowing the use of small inductors and ceramic capacitors for miniaturization, and high input/output conversion ratio. The SC4525A is suitable for next generation XDSL modems, high-definition TVs and various point of load applications.

Features

■ Wide input range: 8V to 28V

■ 3A Output Current

■ 200kHz to 2MHz Programmable Frequency

■ Precision 1V Feedback Voltage

■ Peak Current-Mode Control

■ Cycle-by-Cycle Current Limiting

■ Hiccup Overload Protection with Frequency Foldback

■ Soft-Start and Enable

■ Thermal Shutdown

■ Thermally Enhanced 8-pin SOIC Package

■ Fully RoHS and WEEE compliant

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Applications

■ XDSL and Cable Modems

■ Set Top Boxes

■ Point of Load Applications

■ CPE Equipment

■ DSP Power Supplies

■ LCD and Plasma TVs

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