Looking for Automotive LDO with Transient protection

user4303883

Other Parts Discussed in Thread: TPS7B69-Q1, TPS7B82-Q1, TPS7B70-Q1, TIDA-00746

Dear,

I am working for an automotive project (car) and looking for LDO from 12 volts (Battery) to 3,3 Volts, with transient protection if possible and low drop, there are multiple reference, any recommendations welcome

Best Regards

over 6 years ago

0 Ryan Eslinger over 6 years ago

TI__Guru 55940 points

Hi ,

You are correct that we have several devices that may fit your application such as TPS7B69-Q1. In order to help select the best LDO for your application, could you share what your output current is going to be? Also, could you help me better understand what kinds of transients you are expecting (the magnitude ,slew rate of the transient, duration, and frequency of the transient)?

Very Respectfully,
Ryan

0 user4303883 over 6 years ago in reply to Ryan Eslinger

Intellectual 475 points

Dear Ryan,

output current on 3,3 Volts will approximately 250 mA, the transients I am expecting are mainly the same as training.ti.com/automotive-transients-explained since our project is a car. thanks for your help.

regards

0 Ryan Eslinger over 6 years ago in reply to user4303883

TI__Guru 55940 points

Hi ,

Please consider TPS7B82-Q1 and TPS7B70-Q1. Both of these devices are designed to be off battery and survive battery transients.

Very Respectfully,
Ryan

0 user4303883 over 6 years ago in reply to Ryan Eslinger

Intellectual 475 points

Hi,

Thanks,

I was planing to use TIDA-00746 design between Automotive Battery and TPS7B82-Q1 do you think TPS alone can do the job ?

Best Regards

0 Ryan Eslinger over 6 years ago in reply to user4303883

TI__Guru 55940 points

Hi ,

The TI Design you reference will give additional protection such as including reverse battery protection. You would either do without or add another way.

Very Respectfully,
Ryan

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Looking for Automotive LDO with Transient protection