TPS628502: FB connection for fixed 1.8V o/p M version

Jim Perkins

Part Number: TPS628502

TPS628502MDRLR is the fixed 1.8V output version. What is the function of the FB pin in this case? Should it be left unconnected or should it be connected directly to Vout? Datasheet isn't clear how to use the fixed output voltage versions.

Thanks

Jim

8 months ago

+1 Varun John 8 months ago

TI__Genius 17350 points

Hi Jim,

For the fixed output versions, FB should be directly connected to VOUT to close the loop. The resistor dividers are internal in this case.

Best regards,

Varun

0 Jim Perkins 8 months ago in reply to Varun John

TI__Expert 3420 points

Thanks Varun. Probably need to add that to the datasheet somewhere or show a typical circuit for fixed Vout.

Regards

Jim

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TPS628502: FB connection for fixed 1.8V o/p M version