Use ULN2003 or equivalent to control stepper motor wth output current 1A

[Lionel83]

Hi..

Can ULN2003 control stepper motor with output current 1A? ULN2003 only provide output current of 500mA. Could anyone please kindly advice? Thank you

 

[varunme]

Re: Use ULN2003 to control stepper motor wth output current 1A

its having "Output current 500 mA per channel "

 

[Lionel83]

Beside ULN2003, any other chip have similar function to control a stepper motor?

Hi.. Beside ULN2003 , is there other chip have similar function to control stepper motor with output current 1A? Thank you

Threads merged [alexan_e]

 

[wp100]

Re: Beside ULN2003, any other chip have similar function to control a stepper motor?

Hi,

I believe, though have never tried, you can tie two or more channels of the ULN2003 together so increasing the current handling.

You might find the L298 chip, which can handle up to 4 amps, a better option as it has in a proper heatsink tab which will be needed if you are driving the stepper hard.
It also has current sensing which might be of use in your circuit.

 

[alexan_e]

Re: Beside ULN2003, any other chip have similar function to control a stepper motor?

You can check ULN2065, ULN2069
www.elektronik.sk/datasheet/ULN2075.pdf

Alex

 

[FvM]

As a first step, you should become clear about the necessary drive method for your stepper motor. Higher current stepper motors are often designed for current controlled, bipolar drive and not suited for open collector unipolar drivers like ULN2003.

If unipolar voltage switching is the required drive method, individual transistors, preferably MOSFET are the most simple solution. Why people are only looking for ICs as a solution of any problem?

 

[poorchava]

Agreed, try some ordinary logic level N-channel mosfet (that is: the one which can fully tyrn on at Vgs=5V).

I think ULN2003 is more like for multiplexing/driving large arrays of leds and stuff