- Use MOSFET to drive big motors. For small stepp motor, 500 mA is perfect.gameelgamal said:Hi
I want to use ULN2003 to drive a small stepper motor, and I have some questions
1) What shall I do withe COM pin (pin Number 9), Let it floating or connect it to the supply voltage of the motor???
- The pin numger 9, is free (not connect).
2) I will use a mirocontroller, Is it right to connect the µc directly to the IPs of ULN2003, In other words, Is the output current of the µc can drive ULN2003 properly??
- Yes, the output current can drive propely the ULN2003A.
3) I found this note in the datasheet "The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs may be paralleled for higher current capability."How can I do that????
funnynypd said:Recommend some isolation for motor driving.
gameelgamal said:According to the attached picture, could you explain in more detials what is the function of COM pin
I bet that's optical isolation or some isolation chip from TI.gameelgamal said:funnynypd said:Recommend some isolation for motor driving.
Could you give me some ideas???
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