Integrated Stepper Motor Driver ISC02/04/08
4
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A+/A-
Connect to the stepper motor phase A.
B-/B+
Connect to the stepper motor phase B.
Warning: Hot plugging is forbidden.
Warning: All controllers, gateways and subscriber equipments must be common-
grounded.
4. Typical application
For users need to use external potentiometer (POT) to control the speed, ISC02/04/08 provides a 5V
reference voltage output, and a speed control voltage input port. The resistance of the POT should be
between 5K and 10K ohms. Less than 5K will result in excessive power consumption, and larger than 10K
will cause inaccurate measurement.
Figure 3:Typical application
Note: The external control range must between -0. 3V and 5. 3V. Voltage outside the range will only
produce smoke.
5. Interface
5.1 Supply Voltage
Because of the design of power supply, ISC02/04/08 accepts a wide range input voltage. ISC02
controller accepts a wide range input voltage from 10 to 28VDC. ISC04 controller accepts a wide range
input voltage from 12 to 40VDC. ISC08 controller accepts a wide range input voltage from 12 to 40VDC.
5.2 Power Supply Selection
ISC02/04/08 drivers accept a wide range input voltage from 12 to 40VDC. (ISC02 takes 10 - 28 VDC) In
general, higher supply voltage improves motor performance under high speed situation, but also increases
the power loss and temperature raise.
