push-on-hold-off
Simple power switch using a push button. Push to turn on, hold to turn off.
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| References | Qty | Description | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Digikey | Mouser | RS | Newark | Farnell | LCSC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C1 | 1 | 1uF 0603 X5R | Murata | GRM188R71E224KA88D | KEMET | C0603C105K8PACTU | Yageo | CC0603KRX5R6BB105 | 399-C0603C105K8PAC7867DKR-ND | 603CC603KRX5R6BB105 | 4612708 | 91R0949 | 9402080 | C77051 | ||||
| C2 | 1 | 10uF 0603 X5R | TDK | C1608X5R1A106M080AC | AVX | 06036D106MAT2A | TDK | 06036D106MAT2A | TDK | C1608X5R0J106K080AB | C1608X5R1A106K080AC | 478-5318-6-ND | 810C1608X5R1A106K | 7882887P | 04X3239 | 2211164 | C3877917 | |
| C4 | 1 | 0.1uF 0603 X5R | Kemet | C0603C104K5RACTU | Murata | GRM033R60J104KE19D | KEMET | C0603C104K5RACTU | 490-3167-6-ND | 81GRM033R60J104KE19 | 8015347 | 72J5992 | 1288255 | C127833 | ||||
| D1 | 1 | Diode MiniMELF | onsemi | LL4148 | Diotec | FDLL4148 | onsemi | LL4148 | LL4148 | LL4148FSCT-ND | 512LL4148 | 6708823 | 14M6003 | 2356382 | C3011166 | |||
| LED1,LED2 | 2 | 0603 20mA yellow | Rohm | SML-D12Y8WT86 | Dialight | 598-8040-107F | Dialight | 598-8150-107F | ROHM | SML-D12Y8WT86 | 350-2032-6-ND | 755SMLD12Y8WT86 | 7008039P | 75R0585 | 1867104 | C2840179 | ||
| Q1 | 1 | 30V Vds, 3A Id, Dual HEXFET MOSFET | International Rectifier | IRF7309PBF | Infineon | IRF7309TRPBF | IRF7309PBFTR-ND | 942IRF7309TRPBF | 8268866 | 19K8239 | 2468006 | C3289674 | ||||||
| R1 | 1 | 10k 0603 | Vishay | CRCW060310K0JNEA | Vishay | CRCW060310K0JNEAIF | 541-10KAQCT-ND | 71CRCW060310K0JNEAI | 8206928 | 52K8066 | 1739174 | C169103 |
See a preview of the board and buy the parts from the kitspace.org page.
A power switch using a push button. It turns on with a single press and only turns off when you hold the button down. This could be used to get functionality similar to most laptops where a single press when on will initiate a "soft" shutdown but you can force a "hard" shutdown by holding it down.
The circuit is from this article.
The board is my own design and features:
- Standard 0.1" spacing, fits neatly onto a breadboard
- On-board button (and pins to connect your own)
- Two LEDs indicate input and output power
- Configurable to automatically turn on or stay off on initial power through a solder jumper (auto-off is the default)
- Can switch 3-20V and up to 4A