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A3988SEVTR-T
+NomenclatureIC MTR DRVR BIPOLAR 3-5.5V 36QFN
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FabricantAllegro microsystèmes
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Pièce fabricant #A3988SEVTR-T
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Fiche technique A3988SEVTR-T DataSheet
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En stock5352
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Spécifications
| Attribut | Valeur |
| PartStatus | Not For New Designs |
| BaseProductNumber | A3988 |
| MotorType-Stepper | Bipolar |
| MotorType-AC,DC | Brushed DC |
| Function | Driver - Fully Integrated, Control and Power Stage |
| OutputConfiguration | Half Bridge (8) |
| Interface | Parallel |
| Technology | DMOS |
| StepResolution | 1, 1/2, 1/4 |
| Applications | General Purpose |
| Current-Output | 1.2A |
| Voltage-Supply | 3V ~ 5.5V |
| Voltage-Load | 8V ~ 36V |
| OperatingTemperature | -20°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package | 36-VFQFN Exposed Pad |
| SupplierDevicePackage | 36-QFN (6x6) |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
Présentation
Description
The A3988SEVTR-T operates with a supply voltage range, typically between 8 V to 35 V, and can deliver up to 1.2 A of current per phase, with additional thermal and overcurrent protection features to ensure reliability. It incorporates a built-in translator for easy management, reducing the burden on microcontrollers and enabling simple interface controls.
The device is crafted to be energy efficient, with advanced current control mechanisms like adjustable current decay modes. Its compact and thermal-efficient package makes it suitable for embedded applications where space and heat dissipation are critical considerations. Overall, it offers a robust solution for precise stepper motor control.
Equivalent
Features
1. Microstepping Capability: Offers full, half, quarter, and eighth-step resolutions for precise control.
2. Built-in Translator: Simplifies stepper motor control by converting step and direction inputs into motor phases.
3. Current Control: Provides adjustable current control via a reference voltage, enabling efficient power management.
4. Protection Features: Includes over-temperature shutdown, under-voltage lockout, and cross-conduction protection to enhance reliability and durability.
5. Low RDS(ON) Outputs: Reduces power dissipation and improves thermal performance with low on-resistance MOSFETs.
6. Synchronous Rectification: Enhances efficiency by reducing power loss during current decay.
7. Compact Package: Available in a small, thermally efficient package suitable for space-constrained applications.
Ideal for 3D printers, robotics, and CNC machinery due to its versatility and ease of integration.
Pinout
Key functions include:
1. Microstepping Control: Provides up to 16 microsteps per full step for precise positioning.
2. Current Control: Features a PWM current control mechanism, allowing for efficient regulation of motor current.
3. Protection Features: Built-in protections include thermal shutdown, under-voltage lockout, and crossover-current protection.
4. Internal DAC: The device includes an internal Digital-to-Analog Converter (DAC) to set the current level in each of the motor phases.
These features make the A3988SEVTR-T suitable for applications requiring precise motor control, such as 3D printers, CNC machines, and other automated equipment.