TLC77: TLC7701IPW

Hello Patrick,

Yes, I am looking for same information but in datasheet VIT- is mentioned has 1.1mV not 1.1V hence confused. In addition to that, is there any limitation on the external delay setting, requirement is to set 1 sec POR time delay .

Regards

Ranga

If you have not designed this part in, we would like to recommend a newer part with increased performance. What threshold voltage do you need? Do you need a push-pull output and /MR capability?

Thanks,

Patrick

Hello Patrick,

Thanks a lot for clarifying my question. 1V threshold is good enough for our design.

Yes, I mean time delay between VI+ to reset assertion. I am using in total of 54uF capacitor to introduce delay of 1 sec typically. You are right discharging is the fine I need to see how to do look into that. what happens if I connect resistor of 1K in parallel to CT capacitor?

Regards

Ranga

Hello Patrick,

TLC7701IPW device is used in our old product hence we have chosen this part? We are good with Push-pull output type parts as well if it is cost effective and better performance to suit with our application. Please share me new part number?

Regards

Ranga

Hi Ranga,

We don't recommend using resistors on the capacitor-based reset pins.

Thanks,

Patrick

Hi Ranga,

Please see the TLV840/TLV841. If needed, there is an automotive-qualified version of the TLV840 available, as well. Do these devices work for your application?

If not, what additional features do you need?

Thanks,

Patrick

Hi Patrick,

TLV841 part is not suitable for our application, requirement is to have min 500ms delay at worst case conditions. TLV device supports upto 200ms only.

Is discharge time for TLC7701IPW part same as charging time? Please confirm.

Regards

Ranga

Hi Ranga,

Please see Section 8.3.2 of the TLV840 data sheet or Section 8.3.3 of the TLV841 data sheet. Both products have variants that utilize an external capacitor to program the delay time. The recommended maximum delay time is 6.2 seconds using a 10uF capacitor. Please see Figure 8.3/8.5 respectively for the discharge times. I believe these will apply to TLV7701, as well.

In this case, will the TLV840/841 work for you?

Thanks,

Patrick

Hi Patrick,

I missed to go through completely as part numbering doesn't have that option. It seems like good part, let me go through in details before finalizing new part. Thank You for suggesting new component for design.

Regards

Ranga

Hello Patrick,

Push-pull is not necessity for my requirement even open output is also works. Thank You for your suggestion.

Regards

Ranga