LM3670MF-ADJ

Hi John,

The file is not accessible for us as well. Can the link below help you?

http://www.ti.com/lit/ug/snva098d/snva098d.pdf?keyMatch=LM3670MF-ADJ&tisearch=Search-EN-technicaldocument

Best regards,

Excel

Hi John,

If you don't have any further query, I will close this thread. Feel free to post your additional query anytime.

Best regards,

Excel

Hi 

Still we have issue, we are noticed that the during our Burn In test some time units is going to sleep mode and after some time it starts again,

during debug we saw that the 3.3V is low. 

Hi John,

What is the ambient temp during Burn-in test? Can you share the schematic diagram and layout for review?

Best regards,

Excel

Hi John,

Any update on the items below.

1. What is the ambient temp during Burn-in test?

2. Can you share the schematic diagram and layout for review?

Best regards,

Excel

Hi John,

Any update on the requested data.

1. What is the ambient temp during Burn-in test?

2. Can you share the schematic diagram and layout for review?

Best regards,

Excel

Hi

here is the schematic

here is the layout

ambient is around 25 degree C but the unit will rise its temperature as its on full load condition, it goes above 40 degree C

thanks

Hi John,

First, the Vout setting is 3.3V hence you should be using is LM3670xx-3.3. LM3670xx-ADJ supports only Vout from 0.7V to 2.5V.

Once you replace the IC, can you check the loop stability (measure the phase margin) because the recommended output capacitor is 10uF while in the schematic diagram, the output cap directly connected to the output is 2.2uF + 270uF.

Can you provide your email add so we can discuss privately?

Best regards,

Excel 

Hi

my email is John.Paul@se.com.

I have one more doubt TPS62200DBVR is equivalent to LM3670MF-ADJ

please do confirm

thanks

John Paul I