摘要：设计一个简单的电路断开笔记显示了如何从低电压电源的负载。该电路采用反相电荷泵产生负电压〜等于输入电源和微处理器监控监测的电压差。 Maxim > App Notes > Amplifier and Comparator Circuits
Keywords: charge pump, inverting charge pump, microprocessor supervisor, uP, low-voltage circuit Jun 27, 2003
APPLICATION NOTE 2080
Simple Circuit Disconnects Load from Low-Voltage Supply
Abstract:Design note shows how a simple circuit disconnects the load from a low-voltage supply. The circuit uses an inverting
charge pump to generate a negative voltage ~ equal to the input supply and a microprocessor supervisor to monitor the voltage
difference. Schematic is shown.
A similar version of this article appeared in the April 14, 2003 issue of EDN magazine.
Power supplies often include a circuit that disconnects the load when the supply voltage drops too low (when a battery is nearly
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