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A3977SLPTR-T
+BOMIC MTR DRV BIPOLR 3-5.5V 28TSSOP
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ManufacturerAllegro MicroSystems
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Mfr. Part #A3977SLPTR-T
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Datasheet A3977SLPTR-T DataSheet
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Package 28-TSSOP Exposed Pad
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In Stock3008
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| MotorType-Stepper | Bipolar |
| Function | Driver - Fully Integrated, Control and Power Stage |
| OutputConfiguration | Half Bridge (4) |
| Interface | Logic |
| Technology | DMOS |
| StepResolution | 1, 1/2, 1/4, 1/8 |
| Applications | General Purpose |
| Current-Output | 2.5A |
| Voltage-Supply | 3V ~ 5.5V |
| Voltage-Load | 8V ~ 35V |
| OperatingTemperature | -20°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 28-TSSOP (0.173, 4.40mm Width) Exposed Pad |
Overview
Description
The A3977SLPTR-T features a built-in translator for easy interfacing, minimizing the need for complex microcontroller programming to manage step sequences. It includes overcurrent protection, thermal shutdown, and crossover-current protection for enhanced reliability and safety. Its synchronous rectification feature improves power efficiency, reducing heat generation.
The device comes in a 28-lead TSSOP package with an exposed thermal pad, enabling efficient heat dissipation. This makes it suitable for compact and thermally constrained environments. The A3977SLPTR-T is typically used in printers, scanners, and other automation applications requiring precise motor control.
Equivalent
1. DRV8825 from Texas Instruments: A widely-used stepper motor driver with similar capabilities.
2. L6470 from STMicroelectronics: Another microstepping driver with additional features.
3. TB6600 from Toshiba: Suitable for higher-power stepper motor applications.
These alternatives vary slightly in features, power ratings, and package types, so specifications should be compared to ensure compatibility with your application.
Features
1. Microstepping: Supports up to eighth-step microstepping for smooth motor operation.
2. Current Control: Features a built-in PWM current control mechanism allowing precise control over motor current.
3. Low RDS(on): Low on-resistance for enhanced efficiency and reduced power loss.
4. Mixed Decay Modes: Offers mixed decay modes to optimize motor performance.
5. Internal PWM: Eliminates the need for external components for PWM control.
6. Overcurrent Protection: Safeguards the IC against overcurrent conditions.
7. Thermal Shutdown: Protects the device from overheating.
8. Crossover-Current Protection: Prevents simultaneous conduction of high-side and low-side drivers.
9. Compact Package: Available in a compact surface-mount package suitable for space-constrained applications.
These features make the A3977SLPTR-T well-suited for a variety of applications requiring precise stepper motor control, such as in printers, scanners, and other automation equipment.