Details

---

BUY A3985SLDT https://www.utsource.net/itm/p/12604042.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD		8		50	V
Logic Supply Voltage	VLOGIC		2.7		5.5	V
Maximum Phase Current	IOUT	Continuous, per phase		1.2	2.5	A
Thermal Shutdown	TSD			160		°C
Overcurrent Protection	OCP	Per phase		3.5		A
Operating Temperature	TOPR		-40		125	°C
Sleep Mode Current	ISLP	VDD = 24V		5		μA
Standby Current	ISTBY	VDD = 24V		10		μA

Instructions for A3985SLDT:

1. Power Supply Connection:

   • Connect the main supply voltage (VDD) between 8V and 50V to the VBB pin.
   • Connect the logic supply voltage (VLOGIC) between 2.7V and 5.5V to the appropriate pin.

2. Current Limit Setting:

   • Adjust the current limit by setting the voltage on the REF pin. The typical current limit can be calculated using the formula: [ I_ = V_ times frac{2}{R_} ]
   • Ensure that the current does not exceed the maximum phase current of 2.5A.

3. Thermal Considerations:

   • Ensure proper heat dissipation to prevent the device from exceeding the thermal shutdown temperature of 160°C.

4. Protection Features:

   • The device includes overcurrent protection which limits the current to approximately 3.5A per phase.
   • Monitor the operating temperature to stay within the range of -40°C to 125°C.

5. Sleep and Standby Modes:

   • To enter sleep mode, set the SLP pin high. In this mode, the device consumes less than 5μA.
   • For standby mode, set the ENABLE pin low, resulting in a current consumption of approximately 10μA.

6. Microstepping Configuration:

   • Configure microstepping by setting the MS1 and MS2 pins appropriately. Refer to the datasheet for specific configurations for full-step, half-step, quarter-step, and eighth-step modes.

7. Driver Enable/Disable:

   • Use the ENABLE pin to enable or disable the driver. Setting it high enables the driver, while setting it low disables it.

Ensure all connections are secure and follow the manufacturer’s guidelines for optimal performance and safety.

(For reference only)