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Specifications
SKU: 4136187
IC MTR DRV BIPLR 4.5-5.5V 16SOIC
Below is the parameter table and instructions for the A4975SLBTR-T, a dual H-bridge motor driver from Allegro MicroSystems.
A4975SLBTR-T Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 8 | - | 50 | V | - |
| Logic Input Voltage | VIN | 1.6 | - | 5.5 | V | - |
| Maximum Output Current | IOUT | - | 2.5 | 3.5 | A | Continuous, per channel |
| Peak Output Current | IPEAK | - | 4.5 | 5.0 | A | Per channel |
| Operating Temperature Range | TA | -40 | - | 150 | °C | - |
| Storage Temperature Range | TSTG | -55 | - | 150 | °C | - |
| Thermal Resistance (θJC) | - | - | 3.0 | - | °C/W | Junction to Case |
| Thermal Resistance (θJA) | - | - | 50 | - | °C/W | Junction to Ambient, Heatsinked |
| Minimum PWM Frequency | fPWM | 10 | - | 100 | kHz | - |
| Shutdown Current | ISD | - | 100 | - | μA | VDD = 12V, TA = 25°C |
| Standby Current | ISTBY | - | 10 | - | μA | VDD = 12V, TA = 25°C, all inputs low |
Instructions for A4975SLBTR-T
Power Supply:
- Connect the supply voltage (VDD) to the power input pin.
- Ensure the supply voltage is within the range of 8V to 50V.
- Use a decoupling capacitor (10μF) close to the VDD pin to filter out noise.
Logic Inputs:
- Connect logic signals to the input pins (IN1, IN2, IN3, IN4).
- Ensure the logic input voltage (VIN) is within the range of 1.6V to 5.5V.
- Use pull-up or pull-down resistors as needed to prevent floating inputs.
Motor Outputs:
- Connect the motor leads to the output pins (OUT1, OUT2, OUT3, OUT4).
- Ensure the maximum continuous current per channel does not exceed 2.5A.
- For peak currents, do not exceed 4.5A to avoid overheating.
PWM Control:
- Use PWM signals to control the speed of the motors.
- The minimum PWM frequency is 10kHz, but higher frequencies up to 100kHz can be used for smoother operation.
Thermal Management:
- Ensure proper heat dissipation by mounting the device on a heatsink.
- Monitor the temperature to ensure it stays within the operating range (-40°C to 150°C).
Shutdown and Standby:
- To put the device into shutdown mode, set the enable pin (EN) low.
- In shutdown mode, the current consumption is reduced to approximately 100μA.
- For standby mode, set all inputs low to reduce current consumption to about 10μA.
Protection Features:
- The device includes overcurrent, overtemperature, and undervoltage lockout protection.
- If any of these conditions are detected, the device will automatically shut down to prevent damage.
Layout Considerations:
- Place the device and associated components on a PCB with good thermal management.
- Use wide traces for power and ground connections to minimize resistance and inductance.
By following these instructions, you can ensure reliable and efficient operation of the A4975SLBTR-T motor driver.
(For reference only)Inquiry - A4975SLBTR-T
