SC4525A

SC4525A 28V 3A Step-Down Switching Regulator POWER MANAGEMENT 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 www.DataSheet4U.com  Soft-Start and Enable  Thermal Shutdown  Thermally Enhanced 8-pin SOIC Package  Fully RoHS and WEEE compliant   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. Peak current-mode PWM control employed in the SC4525A achieves fast transient response with simple loop compensation. Cycle-by-cycle current limiting and hiccup overload protection reduces power dissipation during output overload. Soft-start function reduces input startup current and prevents the output from overshooting during power-up. The SC4525A is available in SOIC-8 EDP package. Applications       XDSL and Cable Modems Set Top Boxes Point of Load Applications CPE Equipment DSP Power Supplies LCD and Plasma TVs SC4525A Typical Application Circuit Efficiency...