Details

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BUY A3981KLPTR-T https://www.utsource.net/itm/p/6446923.html
PROGRAMMABLE STEPPER DRVR

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	Vcc	8		50	V	Operating supply voltage range
Logic Supply Voltage	Vlogic	2.5		5.5	V	Logic supply voltage range
Peak Output Current	Ipeak		1.4		A	Peak output current per channel
PWM Frequency	fPWM		20		kHz	Typical PWM switching frequency
Thermal Shutdown	TSD		160		掳C	Temperature at which thermal shutdown occurs
Under Voltage Lockout	UVLO	7.5		8.5	V	Supply voltage below which the device shuts down
Full-scale Current Range	Ifs	0.3		2.5	A	Range of full-scale current setting

Instructions for Using A3981KLPTR-T:

1. Power Supply Setup:

   • Connect the supply voltage (Vcc) within the range of 8V to 50V.
   • Ensure the logic supply voltage (Vlogic) is between 2.5V and 5.5V.

2. Current Limiting:

   • Set the full-scale current using an external resistor connected to the REF pin. The typical relationship is ( I_ = frac{V_}{R_} ).

3. Motor Connection:

   • Connect the motor phases to the OUT1 and OUT2 pins, ensuring correct polarity.

4. PWM Control:

   • Apply a PWM signal to the STEP input to control the motor step rate. The typical PWM frequency is 20kHz.

5. Direction Control:

   • Use the DIR pin to set the direction of rotation. High sets one direction, low sets the opposite.

6. Thermal Monitoring:

   • Monitor the temperature to ensure it does not exceed 160掳C to prevent thermal shutdown.

7. Under Voltage Protection:

   • Ensure the supply voltage remains above 7.5V to avoid under-voltage lockout conditions.

8. Fault Conditions:

   • Check for fault conditions by monitoring the nFAULT pin. It will go low when a fault condition is detected.

9. Enable Pin:

   • Use the nSLEEP pin to enable or disable the device. Low enables the device, high puts it into sleep mode.

This table and these instructions provide essential parameters and operational guidelines for the A3981KLPTR-T stepper motor driver.

(For reference only)