{"product_id":"adafruit-push-button-power-switch-breakout","title":"Adafruit Push-button Power Switch Breakout","description":"\u003cp\u003eThe Adafruit Push-button Power Switch is a tidy little design that lets you control a DC power source using an everyday tactile button.\u003c\/p\u003e\n\u003cp\u003eThe 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 \u003cstrong\u003eIN\u003c\/strong\u003e pin to the \u003cstrong\u003eOUT\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp\u003eUsing 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. A on-board red LED will light up when active so you know its working. There's a fourth \u003cstrong\u003eKILL\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp\u003eComes with a assembled \u0026amp; 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTECHNICAL DETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 20.51mm \/ 0.8\" x 17.75mm \/ 0.69\" x 2.66mm \/ 0.1\"\u003c\/li\u003e\n\u003cli\u003eHeight with Switch: 8.69mm \/ 0.34\"\u003c\/li\u003e\n\u003cli\u003eWeight: 2.6g\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/MC14093B-D.PDF\" target=\"_blank\"\u003eMC14093 Datasheet\u003c\/a\u003e (the NAND gate used) \u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/DMG3415U.pdf\" target=\"_blank\"\u003eP-Channel Pass MOSFET\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit-Push-Button-Power-Switch-PCB\" target=\"_blank\"\u003eEagleCAD PCB files on GitHub\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Fritzing-Library\" target=\"_blank\"\u003eAdafruit Fritzing Library\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":334999076,"sku":"ADA1400","price":5.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/1400-05.jpg?v=1539264033","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-push-button-power-switch-breakout","provider":"Pimoroni Ltd","version":"1.0","type":"link"}