Hi,
I am using the following chip from linear technologies
formatting link
How can I stop common user to connect input (Vcc, pin 10) to voltages greater than 10 Volts?
Jessica
Battery Charger Protecttion
Sep 05, 2013
7 Replies
1) add a pre-regulator
2) design a charger with a custom connector.
3) don't sell to "common users"How about a fuse in series with pin 10 ( Vcc) of the chip? jess
A fuse doesn't prevent applying a voltage greater than absmax.
Your best bet is to provide the charger power supply.
I'm not ruling out a crowbar circuit at say 9V plus fuse, but I don't think it is elegant.
There are tons of parts from the automotive market suitable for this, such as :
formatting link
Sure, go for it... one of them 9V fuses will be perfect :^) (Then you can sell 'em replacement fuses too.)
Say your idiom sometimes sounds Asian, where are you from?
George H.
I don't think you are going to be able to solder this chip - di you look at the package info?
You could use a depletion mode power fet in series with the Vcc pin. Then add a comparator to look at the incoming voltage, and have it turn the fet off when the voltage rises above 7-8 volts.
-Tom
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required