描述 Description

The SC417/SC427 is a stand-alone synchronous buck power supply. It features integrated power MOSFETs, a bootstrap switch, and a programmable LDO in a space saving MLPQ-5x5mm 32-pin package. The device is highly efficient and uses minimal PCB area. It uses pseudo-fixed frequency adaptive on-time operation to provide fast transient response.

特性 Features

Input voltage — 3V to 28V

Internal power MOSFETs — 10A

Integrated bootstrap switch

Smart power-save protection

Configurable 150mA LDO with bypass capability

TC compensated R

DS(ON) sensed current limit

Pseudo-fixed frequency adaptive on-time control

Designed for use with ceramic capacitors

Programmable VIN UVLO threshold

Independent enable for switcher and LDO

Selectable ultra-sonic power-save (SC417)

Selectable power-save (SC427)

Internal soft-start and soft-shutdown at output

Internal reference — 1 tolerance

Over-voltage/under-voltage fault protection

Power good output

Lead-free 5x5mm, 32 Pin MLPQ package

Fully WEEE and RoHS compliant

Applications

Notebook, desktop, tablet, and server computers

Networking and telecommunication equipment

Printers, DSL, and STB applications

Embedded applications

Power supply modules

Point of load power supplies