Description

The SC4808B-1 is a dual-ended, high frequency, integrated PWM controller, optimized for isolated applications that require minimum space. It can be configured for current or voltage mode operation with required control circuitry where secondary side error amplifier is used.

Features

◆ 120µA starting current

◆ Pulse by pulse current limit

◆ Programmable operation up to 1MHz

◆ Internal soft start

◆ Programmable line undervoltage lockout

◆ Over current shutdown

◆ Dual output drive stages on push-pull configuration

◆ Programmable internal slope compensation

◆ Programmable mode of operation (peak current mode

or voltage mode)

◆ External frequency synchronization

◆ Bi-phase mode of operation

◆ -40 to 105 °C operating temperature

◆ MSOP-10 lead free package. This product is fully WEEE

and RoHS compliant

Applications

◆ Telecom equizpment and power supplies

◆ Networking power supplies

◆ Industrial power supplies

◆ Push-pull converter

◆ Half bridge converter

◆ Full bridge converter

◆ Isolated VRM’s

SC4808B-1MSTRT属于集成电路（IC） > PMIC - 稳压器 - DC DC 开关式控制器。Semtech Corporation制造生产的SC4808B-1MSTRTDC-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。