Description

The SC4508A is a low voltage current mode switching regulator controller that drives a P-channel power MOSFET with programmable switching frequency. It can be configured in either buck or buck boost (inverting) con verters. The converters can be operated from 2.7V to 15V input voltage range.

Features

?Wide input voltage range 2.7V to 15V

?Programmable output voltage

?Programmable switching frequency up to 1.5MHz

?Buck or buck boost (inverting) configuration

?Current mode control with slope compensation

?Very low quiescent current in shutdown mode

?Accessible reference voltage

?Hiccup mode after 32 cycle-by-cycle OCP

?4mm x 4mm MLPQ-12 lead free package. This product is fully WEEE and RoHS compliant

Applications

?Low power point of use converters

?Single or multiple output low power converters

?Positive and/or negative output voltage

?DSL cards

?Graphic cards

?I/O cards

?Negative bias supplies

SC4508AMLTRT屬于集成電路（IC） > PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)式控制器。Semtech Corporation制造生產(chǎn)的SC4508AMLTRTDC-DC 開(kāi)關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開(kāi)關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。