ELECTRONICS
ATtiny85 Latching Power Switch
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CASE ANALYSIS
Scenario
Designing a soft latching power switch for a battery-powered ATtiny85 development board.
Key decisions
- Use P-channel MOSFET for high-side switching
- Momentary pushbutton to initially turn on
- Microcontroller holds power via N-channel MOSFET latch
When to reuse this
Battery-powered embedded systems requiring a soft power switch with microcontroller-controlled shutdown.
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circuit-attiny85-development-board-latching-power-switch-with-2n7000