DESCRIPTION

The SC1103 is a versatile, low-cost, voltagemode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1103 with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive pchannel, high-side switch. The small device footprint allows for compact circuit design.

FEATURES

• Low cost / small size

• Switch mode efficiency (90)

• 1 reference voltage accuracy

• Over current protection

• 500mA output drive

• 5V to 12V Input power source

APPLICATIONS

• Pentium® P55 Core Supply

• Low Cost Microprocessor Supplies

• Peripheral Card Supplies

• Industrial Power Supplies

• High Density DC/DC Conversion

SC1103属于集成电路（IC） > DC-DC 开关控制器。Semtech Corporation制造生产的SC1103DC-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。