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ognjen
12-14-2004, 08:42 PM
... can l293d work on 3.6v...

ice
12-14-2004, 09:42 PM
yes it can,but then it makes no sense using an H-bridge[L293D]

-H-bridges are used when u need to convert ur digital logic[0 to 5 V] to higher volages[0 to 36V],so that u can run peripherals such as motors...

just make sure that your logic signals are correct
ie a 1 must be >2.4V
and a 0 must be <2.4V

Vivek
12-14-2004, 10:27 PM
Moreover it would be hard to actually get some wok done by the motor Running from this IC if you are running it at 3.6V

Depending on the motor current, the drops in internal transistors may eat upto 2.5V (1.25V high side and 1.25V low side).
Hence your motor shall actually get
3.6 - 2.5 = 1.1V

this would happen if your motor is consuming approx 0.5A.
You need to check motor current needed and then also the datasheet.

if your motor is taking about 0.2A max then its okay to run at 3.6V
Still dont expect high torque/speed.

if its 1.5V motor then you have no problem.

cheers!

ognjen
12-15-2004, 10:57 PM
... it`s 1.5v motor.... thanks guys!!!

sumandeep1984
12-19-2004, 09:12 PM
Nice info vivek ... thanks for going into the theoritical details...one thing that most people forget to consult while designing...