A power supply, just like any other electronic circuit, can fail. Overvoltage protection requires few parts and is effective and relatively inexpensive insurance for costly electronics systems.

The circuits turn off an external n-channel MOSFET with an internal 100 mA pulldown current when the monitored voltage exceeds its overvoltage threshold.

For load-side circuits, this approach is superior to the diode since the source (battery) voltage enhances the MOSFET, yielding less voltage drop and effectively higher conductance. The NMOS version ...

Overvoltage protection of up to 80V can be achieved with this ic/mosfet solution without the need of additional external components such as capacitors or transorbs at the input. In addition, the ...

According to Linear, it is the first product of its kind to protect, for example, a 12V circuit from a 500V transient without the need for additional protection components. The device has been ...

This circuit provides undervoltage and overvoltage protection for dc input supply voltages (see the figure). Its undervoltage cutoff is 6 V, and its overvoltage cutoff is 11.5 V. When VIN is less ...