No relatively expensive high side current monitor, comparator or latch ICs either. You're wasting your time and money using these items if all you need is a fast electronic "fuse". A single BJT, in conjunction with the MOSFET, is all that is required for UVLO, overcurrent and short circuit protection. Throw in a voltage reference, like the TL431, if the switch has to cover a wide voltage range.
- posted
14 years ago