应用与设计

LT8300 3.3V 隔离型转换器 (符合 DEF-STAN61-5)

详情介绍

概览

产品详情

24V Overvoltage Regulator Withstands 150V at VIN

LT4356 浪涌抑制器可保护负载免遭高压瞬变的损坏。它能够通过控制一个外部 N 沟道 MOSFET 的栅极以在过压过程中 (比如:汽车应用中的负载突降情况) 调节输出。输出被限制在一个安全的数值上,从而允许负载继续运作。LT4356 还监视 V CC 和 SNS 引脚之间的电压降,以避免遭受过流故障的影响。一个内部放大器用于把电流检测电压限制为 50mV。不管在哪一种故障条件下,定时器的起动均与 MOSFET 应力成反比。如果定时器操作终止,则 FLT 引脚将被拉至低电平,以发出“即将断电” 的警告。如果该情况一直持续,则 MOSFET 将关断。在经过一个冷却周期之后,GATE 引脚将被拉至高电平,从而再次接通 MOSFET。

工具及仿真模型

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice