Hi Kunihiro,
You can consider using LM74500-Q1. This device is the same as LM74700-Q1 minus the reverse current blocking functionality.
So, while using LM74500-Q1, the Gate would be high even when Anode > Cathode.
Hi,
In case you want only reverse polarity protection and no other protection feature, I would recommend you to have a look at LM74500-Q1.
LM74500-Q1 has greater pin to pin clearance, smaller package, lower cost when compared to LM7480-Q1
Part Number: LM5050-1 Other Parts Discussed in Thread: LM74500-Q1 Hi guys,
our system is directly connected to a battery and we want to protect against polarity reversal, but our system is bidirectionnal. We want to be
able to regen a certain amount…
Part Number: LM74700-Q1 Other Parts Discussed in Thread: LM5118 , LM74610-Q1 , , LM74500-Q1 Hi team,
My customer use LM5118 buck-boost converter and he wants to do the Reverse polarity protection, and I only find this document
https://www.ti.com/lit…
Hello
I think it is best to prevent any back-feed from an external source into the regulator.
Please see the following application notes.
8640.slyt689_backfeed.pdf
3463.slvae57b.pdf
Part Number: LM74502-Q1 Other Parts Discussed in Thread: LM74502 , LM74800-Q1 , TPS4800-Q1 Tool/software: Hello,
I'm looking at the LM74502 for a reverse input protection with load turn-off. Looking at the package and suggested footprint, it seems like…
Part Number: LM74700-Q1 Tool/software: My previous post has been closed, so I post my reaction in this new post. Please see my previous post: e2e.ti.com/.../lm74700-q1-motor-reverse-current-block-by-lm74700-create-high-voltage-spikes
Hi Shiven Dhir…
Hello
Yes, a simple diode OR is all that you need.
There would be a reverse path from switch node ("OUTPUT" pin) to VIN, as with any switcher.
So you will need the diode OR.
TI also has dedicated diode OR components that have a much lower voltage…
Part Number: LM74700-Q1 Tool/software: Hello Team,
can we use LM74700 IC for reverse polarity protection as one application note (Basic of ideal diode) suggetsed the LM74500 for reverse polarity protection ? what is the difference between these two…
