SG2843M集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器規(guī)格書PDF中文資料

SG2843M屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器。由美高森美公司制造生產(chǎn)的SG2843MDC-DC 開關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開關(guān)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?fù)浣Y(jié)構(gòu)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 SG1842/43 family of control ICs provides all the necessary features to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components.

Current-mode architecture demonstrates improved

line regulation, improved load regulation, pulse-by pulse current limiting and inherent protection of the power supply output switch. The bandgap reference is trimmed to ±1 over temperature.

Features

? Optimized For Off-Line Control

? Low Start-Up Current (<1mA)

? Automatic Feed Forward Compensation

? Trimmed Oscillator Discharge Current

? Pulse-By-Pulse Current Limiting

? Enhanced Load Response Characteristics

? Under-Voltage Lockout with 6V Hysteresis (SG1842

only)

? Double-Pulse Suppression

? High-Current Totem-Pole Output (1A Peak)

? Internally Trimmed Bandgap Reference

? 500kHz Operation

? Undervoltage Lockout

SG1842 - 16 volts

SG1843 - 8.4 volts

? Low Shoot-Through Current <75mA Over

Temperature

Application

? Available To MIL-STD – 883, ? 1.2.1

? Available to DSCC

- Standard Microcircuit Drawing (SMD)