SC1101CS集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器規(guī)格書PDF中文資料

SC1101CS屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器。由Semtech Corporation制造生產的SC1101CSDC-DC 開關控制器PMIC（電源管理集成電路）DC 到 DC 開關式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓撲結構可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。

Description

The SC1101 is a versatile, low-cost, voltage-mode PWM controller designed for low output voltage DC/DC power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1101 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.

SC1101 features include a temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current protection, and an internally compensated error amplifier. Pulse by pulse current limiting is implemented by sensing the differential voltage across an external resistor, or an appropriately sized PC board trace.

The SC1101 operates at a fixed frequency of 200kHz, providing an optimum compromise between efficiency, external component size, and cost.

Features

◆ Low cost / small size

◆ Switch mode efficiency up to 95

◆ 1 reference voltage accuracy

◆ Over current protection

◆ 500mA output drive

◆ SO-8 package

Applications

◆ Pentium? P55 Core Supply

◆ Low Cost Microprocessor Supplies

◆ Peripheral Card Supplies

◆ Industrial Power Supplies

◆ High Density DC/DC Conversion