Adafruit Push-Button Power Switch Breakout

The Adafruit Push-button Power Switch Breakout is a tidy little design that lets you control a DC power source using an everyday tactile button. The breakout uses a latching analog circuit that is triggered by a push of the button. Press once to turn on, then press again to turn off. The circuit uses a 3A P-FET to connect and disconnect the IN pin to the OUT pin. Works great from 3V to 14VDC and up to 3A (although the FET gets a little toasty at continuous 3A draw) yet has only 0.5uA quiescent current draw. Using it is easy: connect the power source to Ground and IN, then the load from Ground to OUT. We include a 12mm tactile switch that works well but you can solder in your own switch as well. Press the button (or short the button pins) to alternate between on or off. An on-board red LED will light up when active so you know it's working. There's a fourth KILL pin, which you can use to turn off the load and/or keep it off even if the button is pressed. When 1 or more volts is applied it will instantly turn off the FET. This allows your project to turn itself off.

---

Features:

1. Simple Push Control: Toggle power on/off with a single tactile button press
2. Voltage Range: Operates from 3V to 14V DC
3. Current Handling: Up to 3A (P-FET may heat under continuous 3A)
4. Ultra Low Power: 0.5μA quiescent current
5. Status Indicator: Onboard red LED shows when power is active
6. KILL Pin: External logic pin to instantly shut off power
7. Switch Options: Includes 12mm tactile button, or solder your own
8. Compact & Ready: Assembled, breadboard-friendly breakout with mounting holes
9. Debounced Circuit: Clean switching action (note: very bouncy switches may affect behavior)
10. One-Way Flow: Pass FET allows current backflow if load voltage > input (due to body diode)
11. No Mechanical Isolation: Not suitable for AC or high-voltage switching

---

Package Includes:

1 x Adafruit Push-button Power Switch Breakout