Description

The SC1104A/B is a versatile voltage-mode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed frequency high efficiency buck regulator can be implemented using the SC1104A/B with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side switch. The small device footprint allows for compact circuit design.

Features

◆ +5V or +12V operation

◆ High efficiency (>90)

◆ 1 Reference voltage accuracy

◆ Hiccup mode over current protection

◆ Robust output drive

◆ RDS(ON) Current sensing

◆ Industrial temperature range

◆ SO-8 package

Applications

◆ Termination supplies

◆ Low cost microprocessor supplies

◆ Peripheral card supplies

◆ Industrial power supplies

◆ High density DC/DC conversion

SC1104A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SC1104ADC-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。