TPS61169: Could you tell me about "TPS61169's DIM pin=L MODE"?

Pokkun

Part Number: TPS61169
Other Parts Discussed in Thread: LM3508, , TPS61158

Hi, team.

My customer using LM3508, now.

But , due to the following factors, the LM3508 is hard to use and needs to be replaced in the future.

Factor: The LM3508 will have some low current offsets due to the amplifier offset voltage impressed across the current setting resistor.

So only thing to ensure 0 mA current is to bring the enable input low.

(My customer want to be 0 mA current by DIM pin = L)

So question.

If TPS61169 is set to DIM pin = L, is ILED completely cut off?

Best regards,

Masumi Sekiguchi.

over 6 years ago

0 Caryss Li over 6 years ago

TI__Expert 4550 points

Hi Masumi
Yes, when the CTRL is low, (lower than 0.4V as stated in datasheet). there should be no output current.

0 Pokkun over 6 years ago in reply to Caryss Li

Genius 4695 points

Hi, Caryss-san.

Thank you very much for your reply！
We will check with you whether you can use it as a future replacement for LM3508 for customer.

Best regards,
Masumi Sekiguchi

0 Caryss Li over 6 years ago in reply to Pokkun

TI__Expert 4550 points

Hi Masumi-san,
If you are looking for synchronous device, please also take a look ar TPS61158.
May I know what is yoru application? who is the end customer and what is the end equipment? thanks.

0 Pokkun over 6 years ago in reply to Caryss Li

Genius 4695 points

Thank you for your answer.

This project's application(end equipment) is "Drive recorder(in car)".
But I can't identify end customer because this projects customer is EMS maker.
Sorry.

Best regards.

Power management

Power management forum

TPS61169: Could you tell me about "TPS61169's DIM pin=L MODE"?