# Adafruit Push-button Power Switch Breakout

**Type:** Product page · **SKU:** ADA1400 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-push-button-power-switch-breakout.html ([markdown](https://core-electronics.com.au/adafruit-push-button-power-switch-breakout.html.md))

The Adafruit Push-button Power Switch is a tidy little design that lets you control a DC power source using an everyday tactile button. The breakout uses a latching...

## Pricing

- **Price:** $11.10 (inc GST) — $10.09 AUD, exc GST
- **Quantity discounts:** 10+ $9.79 (exc GST) · 50+ $9.58 (exc GST)

## Availability & dispatch

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## Description

The Adafruit Push-button Power Switch 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. Adafruit 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. A on-board red LED will light up when active so you know its 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.

Comes with a assembled & tested bread-board friendly breakout board with four mounting holes, a 12mm tactile button, and some 0.1" male header you can solder to the board to plug it into a breadboard.

The power switch is an elegant way to control power to your project, but there are some things to keep in mind: since there is a pass FET, this is only for 3-14V DC voltages. This is not a mechanical switch so there is no air-gap isolation. There is a 'body diode' in the pass FET so if the load has a voltage on it that is higher than the input voltage, current will flow back to the input. There is built-in debouncing but very bouncy switches can be annoying as they will turn on and off fast instead of latching.

Adafruit Push-button Power Switch Breakout ([11:52](https://www.youtube.com/watch?feature=player_detailpage&v=oHNjyMrqcno#t=712))

## Technical Details

- Dimensions: 20.51mm / 0.8" x 17.75mm / 0.69" x 2.66mm / 0.1"
- Height with Switch: 8.69mm / 0.34"
- Weight: 2.6g
- [MC14093 Datasheet](https://core-electronics.com.au/attachments/localcontent/MC14093B-D_15752904c25.PDF) (the NAND gate used) [P-Channel Pass MOSFET](https://core-electronics.com.au/attachments/localcontent/DMG3415U_22190130460.pdf)
- [EagleCAD PCB files on GitHub](https://github.com/adafruit/Adafruit-Push-Button-Power-Switch-PCB)
- [Adafruit Fritzing Library](https://github.com/adafruit/Fritzing-Library)

 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/4/1400-05.jpg)