Battery power back-uped circuit

[Ioannis]

Because according to Electrical Specs, the FVR may be from -8% to +6% for example on 16F1827.

I would not trust this to charge a LiPo battery at all!

Ioannis

[Ioannis]

Roger,

The important specs is dependent on the application.

For example, if you drive the MosFet from a logic level chip, say a MCU, then you want the Vgs to be as low as possible for the MosFet to be fully closed and have minimum Rdson

Other spec like the circuit on the above Note, is the Rds itself, so you don't have thermal losses.

Also the Vds max should be more than the worst case on your circuit voltage levels.

Ioannis

[flotulopex]

Roger,
The important specs is dependent on the application.....
Ioannis

Thanks Ioannis.

I'll give it a try with a few different MOSFETs and see what happens.

For any reason, until I haven't tested it with my "hands" (and the voltmeter ), it doesn't get inside my head that easy.

Maybe I'm getting too old to play with all these fantastic toys

[Ioannis]

Experience is gained only in action!

Ioannis

[sayzer]

Experience is gained only in action!

Ioannis

This statement is giving me naughty thoughts

[Ioannis]

You got yourself 2 points so far with naughty thoughts!

Ioannis