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Product Detailed Parameters
- Description：IC MTR DRV BIPOLAR 3-5.5V 48LQFP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tray
- Motor Type - Stepper：Bipolar
- Motor Type - AC, DC：Brushed DC
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (8)
- Interface：Parallel
- Technology：DMOS
- Step Resolution：1, 1/2, 1/4
- Applications：General Purpose
- Current - Output：1.2A
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：8V ~ 36V
- Operating Temperature：-20°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：48-LQFP Exposed Pad
- Supplier Device Package：48-LQFP-EP (7x7)
- Grade：-
- Qualification：-
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Overview
The A3988SJP-T is a bipolar stepper motor driver manufactured by Allegro MicroSystems, housed in a 48-LQFP-EP package. It supports full, half, and quarter-step resolutions with an output current of 1.2A. The device operates on a supply voltage of 3V to 5.5V and handles load voltages from 8V to 36V. It features DMOS technology, parallel interface, and surface mount installation. Operating temperatures range from -20°C to 85°C.
Feature Summary
- Integrates control logic and power stages for simplified design
- Supports multiple microstepping resolutions including full, half, and quarter steps
- Includes built-in protection mechanisms such as thermal shutdown and overcurrent protection
Applications
- General purpose stepper motor control
- Motion control systems
- Industrial automation equipment
Procurement Notes
Verify the specific suffix 'T' indicates tape and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check if the component is marked as not recommended for new designs due to potential minimum order quantity restrictions or lifecycle status changes.
Selection Notes
Select this part when a compact solution for bipolar stepper motors is required with integrated control and power stages. Ensure the application voltage does not exceed 36V and current demands remain within the 1.2A limit. Consider the 48-pin LQFP package size constraints and thermal dissipation needs for the intended operating environment.
Part Context
This component belongs to the A3988 series of stepper motor drivers from Allegro MicroSystems. It is designed as a complete solution for driving bipolar stepper motors, combining translator logic with high-current DMOS outputs. The series is commonly used in applications requiring precise motion control without complex external circuitry.
Replacement Considerations
Direct substitutes include other variants in the A3988 family such as A3988SEVTR-T (QFN package) or A3988SLPTR-T (TSSOP package), provided pin compatibility and package dimensions are verified. Cross-referencing with similar Allegro stepper drivers like the A4988 may be necessary if higher current capacity is required.
