复位电路可确保有效电源电压

摘要： 本文重点，确保有效的系统电压是目前之前将它应用于负载使用外部 MOSFET 交换机。这个简单的电路使用复位电路和 MOSFET 电期间提供保护电路。
Maxim > App Notes > AUTOMOTIVE MICROPROCESSOR SUPERVISOR CIRCUITS

Keywords: reset circuit, power-up, por, power on reset, reset timeout, sequencer, active-high, push-pull, Apr 11, 2002
SOT23, protection circuit

APPLICATION NOTE 1050
Reset Circuit Ensures Valid Supply Voltage

Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present
before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection
circuit during power-up.


It is often necessary to prevent a power supply's voltage from being applied to a load until the voltage has
reached a certain minimum value. The circuit of Figure 1, consisting of two compact SOT23 packages, protects
the load by blocking the supply voltage (nomi