What is Latchup?
Latch-up is a condition in which the parasitic components give rise to the Establishment of low
resistance conducting path between VDD and VSS with Disastrous results.
(in the figure, moat = substrate)
|The start of trouble!|
|Electron flow builds up voltage|
|The forward biased source injects some holes|
|The holes are swept into the substrate|
|Voltage drop at the n-channel source end.|
|The electrons are swept into the moat|
|More current means a bigger voltage and more holes injected.|
How to avoid Latchup?
Hardwork Can Never Ever Fails...