TPS3897: Reset Timeout

Hi Sobin,

Unfortunately, the TPS3897A may not fit your application since the CT, programable delay, is applied to the rising edge of the Vsense for this device.

We do have the TPS3899, TPS3899DL01DSER, which has a programmable input sense delay and output de-assertion delay, but this device is limited to 6.2s for both delays.

Another option is going to be the TPS3760, TPS3760E012DYYR, this device, like the TPS3899, has a programmable timing, but the sense delay is limited to 1.28s and reset time delay of 12.8s. The timing limitation is addressed by using using the TPS3760E012DYYR, a overvoltage monitor active low device, and use it as a under voltage active high device. This way, the sense delay timing going to be 12.8s max and the reset delay is going to be 1.28s. This is illustrated the the timing diagrams below.

https://www.ti.com/product/TPS3899

https://www.ti.com/product/TPS3760

Please let me know if additional help is needed.

Jesse