Sparkfun Soft Power Switch

• Sparkfun Soft Power Switch
• Offers a passive, hard on/off switch
• Works up to 12 V voltage
• Provides very low <50 nA quiescent current
• Sense/Control pin can be connected to a microcontroller

The Sparkfun Soft Power Switch is a passive, hard on/off switch with software feedback and control. In other words, it's like the on/off switch on a laptop.

A simple press will turn the system on. Another press can (with MCU intervention) turn off the system. And if things go really wrong, pressing and holding the button will force a power-down. If you're building something with an enclosed battery and need a good power button, this is the board you need.