TPS3808G09DBVR

vijayavani raju

Hi,

We are working on a project where we use Delay Supervisor TPS3808G09DBVR for voltage monitoring circuit. We tested the circuit with Ct of 200pF on a PCB, which should give a reset delay of 1.64ms. When it is tested for different iterations, we found that the reset delay not being consistent and varying to the worst case of 30s delay. Have somebody experienced the same? What could be the reason for this inconsistency. Please help to resolve the issue. Please find below, the voltage monitoring circuit that we use.