SC402B数据手册集成电路（IC）的线性稳压器控制器规格书PDF

描述 Description

The SC402B is a stand-alone synchronous EcoSpeed® buck power supply which incorporates Semtech’s advanced patented adaptive on-time control architecture.

特性 Features

·Power System·Input voltage — 3V to 28V
·Bias voltage — 3V to 5.5V LDO or external
·Up to 96% peak efficiency
·Integrated bootstrap switch
·Programmable LDO output — 200mA
·Reference tolerance — 1% TJ= -40 to +125 °C
·Programmable soft start time

·Logic Input/Output Control·Independent EN controls for LDO and switcher
·Programmable VIN UVLO threshold
·Power good output
·Selectable PSAVE or FCM mode

·Protection·Over-voltage and under-voltage
·TC compensated RDS(ON) sensed current limit
·Thermal Shutdown

·Output Capacitor Types·High ESR — SP, POSCAP, OSCON
·Ceramic capacitors

·Package·Lead-free package — 5x5mm, 32-Pin MLPQ
·RoHS/WEEE compliant and Halogen free

应用 Application

·Networking and telecommunication equipment
·Printers, DSL, and STB applications
·Embedded systems and power supply modules
·Point of load power supplies

简介

SC402B属于集成电路（IC）的线性稳压器控制器。由制造生产的SC402B稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。