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I have a customer requirement to enable and disable enable pin of regulator using GPIO. We a delay circuit in between. Delay is required both for powerup and power down condition. Can someone suggest me a circuit for powerup and power down delays using transistor or mosfet.

Shifali
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  • If you are using a GPIO, then you should put the delay in the software that drives the GPIO, rather than in the signal produced by the GPIO. – Chris Stratton Oct 10 '20 at 04:27
  • We need to provide an option for a hardware circuit to implement a delay. – Shifali Oct 10 '20 at 04:50
  • How long a delay? With what sort of precision? The same in both directions? What's your tolerance for power consumption by the circuit? – Chris Stratton Oct 10 '20 at 04:52
  • We need a delay of 100ms for powerup and 2seconds for power down. The power consumption by the circuit should be in mW. – Shifali Oct 10 '20 at 05:24
  • Check out some audio power amps they have a delay for power on for the speaker output. – Solar Mike Oct 10 '20 at 05:40

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