Power Management
FemtoBuck DC-DC Regulators and Controllers

Semtech SC4508A

Buck or Buck-Boost (Inverting) Current-Mode Controller

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) converters.

Overview

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

Packaging

MLPQ-12

Order Codes

SC4508AMLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
SC4508ABUCKEVB: SC4508A Evaluation Board
SC4508ABUCK-BOOSTEVB: SC4508A Evaluation Board