SC403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 SC403 is a stand-alone synchronous EcoSpeed® buck power supply which incorporates Semtech’s advanced patent-pending adaptive on-time control architecture to provide excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a bootstrap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area.

特性 Features

·Power System:·Input voltage — 3V to 28V
·Internal or external bias voltage — 3V to 5V
·Integrated bootstrap switch
·Programmable LDO output — 200mA

·1% reference tolerance -40 to +85 °C
·EcoSpeedTM architecture with pseudo-fixed frequency adaptive on-time control
·Logic Input/Output Control:·Independent control EN for LDO and switcher
·Programmable VIN UVLO threshold
·Power good output
·Selectable ultrasonic power save mode
·Programmable soft start time

·Protections:·Over-voltage and under-voltage
·TC compensated RDS(ON) sensed current limit

·Thermal shutdown
·Any ESR — SP, POSCAP, OSCON, and ceramic capacitors
·Package:·Lead-free package — 5x5mm, 32-pin MLPQ
·Fully RoHS/WEEE compliant and halogen free

应用 Application

·Office automation and computing
·Networking and telecommunication equipment
·Point of load power supplies and module replacement

简介

SC403属于集成电路（IC）的线性稳压器控制器。由制造生产的SC403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。