Power Supply Needed

Mar 25, 2011 12 Replies

I have +5V/1A available (wall wart).



I need +20V to +24V at 60mA.



Is there something I can buy off-the-shelf at not too outrageous an expense?



Or is there some simple LT part I can use? ...Jim Thompson



-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

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| 1962 | I love to cook with wine. Sometimes I even put it in the food.


"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

I'm assuming you don't need DC isolation here. As such, how about

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(OEJ24SC0512 in particular)? Mouser.Com has them for

This is a bit left field and assumes you have time to wait for delivery

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with an appropriate value 5 - 10 watt resistor they also make a good emergency battery charger.

This would be close for an LT part to use

LT1308A/LT1308B

Looks perfect! But I'm puzzled over your saying no DC isolation and the Mouser listing saying 500V "isolation". Not that I care. The data sheet is vague. ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Remember: Once you go over the hill, you pick up speed

hi, how about ? : MC34063A

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mark

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

DC-DC converter? Should cost a few dollars.

Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------

Cute!

...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Remember: Once you go over the hill, you pick up speed

I ordered the OEJ24SC0512 that Joel recommended... $17.50

Some day, when I'm not in a rush, I'll do it with the MC34063 that Mark recommended. ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Remember: Once you go over the hill, you pick up speed

I wonder if he means he wants the desired voltage to be adjustable; if it's just a range in the spec, I'd say just buy a 20 or 24 volt wallwart.

Cheers! Rich

Anyone know of a true data sheet or app note for the OEJ24SC0512?

All I can locate is a tabular listing of I/O "specs". ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Remember: Once you go over the hill, you pick up speed

THis?

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That isn't enough?

jamie

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