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View Full Version : Need a ULN2803 like IC for "High Side" driver. Any ideas ?



Bean
08-10-2006, 12:18 AM
I need to control the high side of +12volts @ 100mA, from a 0/+5 output pin.
I need to control 8 lines (hopefully with 1 ic).

Any thoughts ?

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Cheap 4-digit LED display with driver IC·www.hc4led.com (http://www.hc4led.com)

Low power SD Data Logger www.sddatalogger.com (http://www.sddatalogger.com)

"You're braver than you believe, stronger than you seem, and smarter than you think" Christopher Robin to Pooh
·

Bruce Bates
08-10-2006, 01:16 AM
Bean -

Do you want to contol them en masse, or individually?

Regards,

Bruce Bates

Bean
08-10-2006, 01:30 AM
Individually. Just like the ULN2803.

Bean.

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Cheap 4-digit LED display with driver IC·www.hc4led.com (http://www.hc4led.com)

Low power SD Data Logger www.sddatalogger.com (http://www.sddatalogger.com)

"You're braver than you believe, stronger than you seem, and smarter than you think" Christopher Robin to Pooh
·

Chris Savage
08-10-2006, 06:30 AM
Bean,

·· The L293D that is used on the PDB is a push-pull driver, and can control the high side of the devices, however it only has 4 outputs.· There may be a similar chip, however which can control more outputs.· I hope this helps.

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Chris Savage
Parallax Tech Support
csavage@parallax.com (mailto:csavage@parallax.com)

Bean
08-10-2006, 06:16 PM
Chris,
That is close enough...
Thanks alot.

Bean.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Cheap 4-digit LED display with driver IC·www.hc4led.com (http://www.hc4led.com)

Low power SD Data Logger www.sddatalogger.com (http://www.sddatalogger.com)

"You're braver than you believe, stronger than you seem, and smarter than you think" Christopher Robin to Pooh
·

Chris Savage
08-10-2006, 09:32 PM
No problem...You can find example code and connections in the Stamp Works 2 manual on our website.· Take care.

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Chris Savage
Parallax Tech Support
csavage@parallax.com (mailto:csavage@parallax.com)