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Lowest consumption battery backup

 
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Markusa
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Lowest consumption battery backup
PostPosted: Sun Jul 17, 2005 4:27 pm     Reply with quote
Hi everyone,
I need to add a battery backup, to a PIC that is being fed with 3.6v.
The backup battery is a TADIRAN 3.6v one.
The PIC consumption is nearly 0.2mah. Have designed a little circuit with 2 BJT, but sure a FET or MOSFET would be lot more efficient.
Question is: Does anyone have an schematic for this ?
Thanks, MARKUSA.-
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Joined: 17 Sep 2003
Posts: 205

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Re: Lowest consumption battery backup
PostPosted: Sun Jul 17, 2005 8:37 pm     Reply with quote
Markusa wrote:
Question is: Does anyone have an schematic for this ?

1) do you need reverse battery protection?
2) have you considered using a 3V lithium (CR123A)?

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MARKUSA
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PostPosted: Mon Jul 18, 2005 5:00 am     Reply with quote
Battery protection is already implemented. Batteries are 3.6v., cause there are some peripherals that need it.
MARKUSA.
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