LM5117: Enable Pin?

Greg Ray

Part Number: LM5117

The part selection tool states that the LM5117 has Enable as a feature, yet I don't see any enable pin on the part. Am I missing something?

over 7 years ago

0 Greg Ray over 7 years ago

Prodigy 30 points

I did some digging and it looks like UVLO is used. I'm going to use a pullup resistor to VCC with an NFET to GND that can be activated with a GPIO. This will pull UVLO to GND and act as an enable.
Any other thoughts? Am I understanding this correctly?

0 Greg Ray over 7 years ago in reply to Greg Ray

Prodigy 30 points

UPDATE: I have no idea why I didn't realize this before... but just use a 10k pulldown resistor on UVLO and then drive it high with a GPIO just as though it's an enable pin. Haha!

Power management

Power management forum

LM5117: Enable Pin?