TPSM82816: Low Dropout Operation

user6004480

Intellectual 660 points

Part Number: TPSM82816

Tool/software:

Hi expert,

Is it possible to use TPSM82816 with VIN=5V and VOUT=4.2V settings in 100% mode?

What is Min Voltage difference between VIN and VOUT(VIN-VOUT) in 100% mode?

over 1 year ago

0 Chris Glaser over 1 year ago

TI__Guru**** 151530 points

Hi,

This should be possible, but it depends on your input voltage tolerance and load current. Does this section in the D/S explain it for you?

Thanks,

Chris

0 user6004480 over 1 year ago in reply to Chris Glaser

Intellectual 660 points

Hi, Chris

Thank you for reply !

Sorry for the lack of confirmation of D/S.
We check this D/S explain again.

And we have additional question.
When we calculate VIN(min) with equation (5), Is it correct that we refer to Figure 6-5 or Figure 6-6 to determin RDP ?

0 Chris Glaser over 1 year ago in reply to user6004480

TI__Guru**** 151530 points

Hi,

Those graphs are for different devices in this family. So, use the graph from the device that you will use.

I recommend the newer VCA package, as it is smaller and has better efficiency.

Chris

+1 user6004480 over 1 year ago in reply to Chris Glaser

Intellectual 660 points

Hi, Chris

Thank you for reply !

Power management

Power management forum

TPSM82816: Low Dropout Operation