Images are for reference only
A3977SLPTR
+BOMIC MTR DRV BIPOLR 3-5.5V 28TSSOP
-
ManufacturerAllegro MicroSystems
-
Mfr. Part #A3977SLPTR
-
Datasheet A3977SLPTR DataSheet
-
In Stock5991
365 Days Quality Guarantee
7*24 hours service quarantee
90-day after-sales guarantee
Genuine Product Guarantee
Specifications
| Attribute | Value |
| Part Status | Obsolete |
| Motor Type - Stepper | Bipolar |
| Function | Driver - Fully Integrated, Control and Power Stage |
| Output Configuration | Half Bridge (4) |
| Interface | Logic |
| Technology | DMOS |
| Step Resolution | 1, 1/2, 1/4, 1/8 |
| Applications | General Purpose |
| Current - Output | 2.5A |
| Voltage - Supply | 3V ~ 5.5V |
| Voltage - Load | 8V ~ 35V |
| Operating Temperature | -20°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 28-TSSOP-EP |
| Base Product Number | A3977 |
Overview
Description
Key features include adjustable current control, overcurrent protection, and thermal shutdown, ensuring reliability during operation. The device can operate in various modes, such as full-step, half-step, and microstepping, making it versatile for different applications. It is commonly used in robotics, CNC machines, and various automation systems due to its ability to provide precise control over motor movements.
The A3977SLPTR is available in a compact package, facilitating easy integration into electronic designs, and is suitable for applications requiring high performance and efficiency in motor control.
Equivalent
Features
1. Voltage Range: Operates from 8 V to 35 V, making it suitable for a variety of stepper motors.
2. Current Control: Features adjustable current control with a maximum output of 2 A per phase, allowing for precise motor control.
3. Microstepping: Supports up to 16 microsteps per step, enabling smoother operation and reduced vibration.
4. Integrated Protection: Includes built-in thermal shutdown, overcurrent protection, and undervoltage lockout, enhancing reliability and safety.
5. Simple Interface: Easy-to-use control interface with step and direction inputs.
6. Compact Package: Available in a small, surface-mounted package, facilitating space-constrained designs.
Overall, the A3977SLPTR provides a robust solution for driving stepper motors in robotics, automation, and other precision applications.
Pinout
Pin Count: 16 pins
Key Functions:
1. VM (Power Supply): Connects to the motor supply voltage.
2. GND: Ground reference.
3. NFAULT: Fault indicator output.
4. RESET: Resets the internal logic.
5. STEP: Input for clock pulses to control motor steps.
6. DIR: Direction control input.
7. M0, M1, M2: Microstepping resolution control pins.
8. RMS (Current Control): Sets the motor driver current limit.
9. SLEEP: Low-power mode control.
10. PWM: Controls PWM frequency for motor operation.
11. CSP/CSN: Current sense pins.
This IC facilitates smooth and efficient motor control, making it suitable for various applications, including robotics and CNC machinery.