Details

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BUY A3988SJPT https://www.utsource.net/itm/p/12603898.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VCC	8	-	30	V	Operating voltage range
Logic Supply Voltage	VLOGIC	2.5	-	5.5	V	Logic supply voltage range
Peak Output Current	IOUT	-	1.4	-	A	Peak output current per channel
Thermal Shutdown	TSD	-	160	-	掳C	Thermal shutdown temperature
Under-Voltage Lockout	UVLO	6.5	-	7.5	V	Under-voltage lockout threshold (rising)
Sleep Mode Current	ISLP	-	10	-	渭A	Current consumption in sleep mode
Active Mode Current	IACT	-	50	-	mA	Typical current consumption in active mode

Instructions for Using the A3988SJPT

1. Power Supply Connection:

   • Connect the VCC pin to a power supply within the range of 8V to 30V.
   • Connect the VLOGIC pin to a logic supply between 2.5V and 5.5V.

2. Motor Connections:

   • Connect motor coils to the OUT1, OUT2, OUT3, and OUT4 pins as per the motor configuration.

3. Control Signals:

   • Use STEP and DIR pins to control stepping and direction of the motor.
   • Set the SLEEP pin high to activate the device or low to put it into sleep mode.

4. Current Limit Setting:

   • Adjust the current limit by setting the appropriate voltage on the REF pin. The formula is ( I_{text} = frac{V_{text}}{0.014} ).

5. Protection Features:

   • Ensure that thermal shutdown and under-voltage lockout features are functioning correctly by monitoring the respective thresholds.

6. Heat Dissipation:

   • For optimal performance, ensure adequate heat dissipation, especially when operating at higher currents or temperatures.

7. Initialization:

   • Before starting operation, initialize the device by setting up the necessary control signals and ensuring all connections are secure.

(For reference only)