This is a multi-part message in MIME format.

------=_NextPart_000_01A4_01C65780.81FE60C0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

Attached is the block diagram of a PSU I need to build. The bit
I'm missing is "?"

Input - 12V or 24V automotive/transformer tolerant, down to
8V-ish if possible

Output - SLA charger/float, say 0.5A for charging, and 5V,
around 0.1A. The nominal 12V is also used for 4-20mA

It's necessary for it to be able to recharge a 12V SLA from a 12V
automotive battery

Any recommendations for this front end ? It doesn't have to be a
1-chip solution, can be reasonably complex. Lowest quiescent
would be best, as other components are planned to be asleep to
save power if the whole thing isn't on mains, which is when it goes
over to the SLA as the primary supply

TIA

===============================================
If you aren't part of the solution, you're part of the precipitate




------=_NextPart_000_01A4_01C65780.81FE60C0
Content-Type: image/gif;
	name="wide-range-psu.gif"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
	filename="wide-range-psu.gif"
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------=_NextPart_000_01A4_01C65780.81FE60C0
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

------=_NextPart_000_01A4_01C65780.81FE60C0--