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Product Detailed Parameters
- Description：IC MTR DRV BIPOLAR 3-5.5V 24SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- Motor Type - Stepper：Bipolar
- Motor Type - AC, DC：-
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (4)
- Interface：Logic
- Technology：Bipolar
- Step Resolution：1, 1/2, 1/4, 1/8
- Applications：General Purpose
- Current - Output：750mA
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：4.75V ~ 30V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Grade：-
- Qualification：-
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Overview
The A3967SLB is a complete microstepping motor driver with a built-in translator, designed for bipolar stepper motors. It supports full-, half-, quarter-, and eighth-step modes. The device features an output drive capability of 30 V and ±750 mA. It includes a fixed off-time current regulator capable of operating in slow, fast, or mixed current-decay modes to reduce audible noise and improve accuracy. Logic supply voltage ranges from 3.0 V to 5.5 V. The component is housed in a 24-SOIC package.
Feature Summary
- Built-in translator enables direct interface with step and direction signals without external logic.
- Automatic current-decay mode detection selects between slow, fast, or mixed decay for optimal performance.
- Integrated protection circuits include thermal shutdown, crossover-current protection, and internal UVLO.
Applications
- Bipolar stepper motor control systems
- Precision motion control applications
- Office automation equipment
Procurement Notes
Verify the specific suffix against official Allegro MicroSystems documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status as historical data may vary by production batch. Ensure the 24-SOIC package dimensions match your PCB footprint requirements before finalizing procurement decisions.
Selection Notes
Select this component when driving bipolar stepper motors requiring integrated translation and microstepping capabilities. The ±750 mA output rating suits moderate load applications. Consider the 3.0 V to 5.5 V logic supply range for compatibility with standard digital controllers. Evaluate thermal management needs given the SOIC-24 package constraints.
Part Context
The A3967 belongs to Allegro MicroSystems' family of DMOS microstepping drivers with translators. It serves as a complete solution for stepper motor control, integrating power stages and control logic. This series is widely used in applications demanding smooth motor operation and reduced acoustic noise through advanced current regulation techniques.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer documentation for potential cross-references or updated product line replacements.
