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