SC461数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

描述 Description

The SC461 is a synchronous EcoSpeed® buck regulator which incorporates Semtech’s advanced, patented adaptive on-time control architecture to provide excellent light-load efficiency and fast transient response.

特性 Features

·Input voltage — 3V to 28V·Integrated bootstrap switch
·Fixed 5V LDO output — 200mA
·1% reference tolerance -40 to +85 °C
·Selectable internal/external bias power supply
·EcoSpeed® architecture with pseudo-fixed frequency adaptive on-time control

·Logic input and output control·Independent enable controls for LDO and switcher Programmable soft-start time
·Programmable VIN UVLO threshold
·Power Good output
·Selectable power-save mode

·Protections·Automatic restart on fault shutdown
·Over-voltage and under-voltage
·TC compensated RDS(ON) sensed current limit
·Thermal shutdown
·Smart power-save
·Pre-bias start-up

·Capacitor types: SP, POSCAP, OSCON, and ceramic
·Package — 3 x 3(mm), 20-pin MLPQ
·Lead-free and halogen-free
·RoHS and WEEE compliant

应用 Application

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

简介

SC461属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的SC461DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。