Details

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BUY A3984SLPT https://www.utsource.net/itm/p/6760386.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VDD	8		50	V	Operating supply voltage range
Logic Supply Voltage	VLOGIC	3.3		5.5	V	Operating logic supply voltage range
Maximum Output Current	IOUT		1.2	2	A	Peak current per output
Internal Power Dissipation	PD			2.5	W	Maximum power dissipation
Thermal Shutdown	TSD		160		°C	Thermal shutdown temperature
Fault Detection Time	TF		10		μs	Time to detect fault conditions
Step Input Voltage	VIN	0		5.5	V	Range of step input voltage
PWM Frequency	FPWM		10	20	kHz	Recommended PWM frequency

Instructions for Using A3984SLPT:

1. Power Supply Connection:

   • Connect the VDD pin to a power supply within the specified range (8V to 50V).
   • Ensure VLOGIC is connected to a stable logic supply between 3.3V and 5.5V.

2. Current Limiting:

   • Set the maximum output current using an external resistor connected to the CS pin.
   • The peak current should not exceed 2A.

3. Thermal Management:

   • Monitor the device's operating temperature to avoid exceeding 160°C, which triggers thermal shutdown.
   • Consider heatsinking if continuous high-power operation is expected.

4. Fault Handling:

   • The device will detect faults within approximately 10μs.
   • Implement appropriate circuitry to handle fault conditions as indicated by the FLT pin.

5. Step Input Configuration:

   • Use the STEP input with voltages ranging from 0V to 5.5V to control motor steps.
   • Ensure proper timing and synchronization for accurate motor control.

6. PWM Control:

   • Operate the PWM input within the recommended frequency range of 10kHz to 20kHz for optimal performance.
   • Adjust PWM duty cycle to control motor speed or torque.

7. General Operation:

   • Always refer to the datasheet for detailed pin configurations and timing diagrams.
   • Follow best practices for PCB layout to ensure reliable operation, particularly concerning ground planes and decoupling capacitors.

(For reference only)