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Product Detailed Parameters
- Description：IC MTR DRV BIPOLAR 3-5.5V 48LQFP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 A3988SJPTR-T is a dual bipolar stepper motor driver manufactured by Allegro MicroSystems. It integrates control logic, current regulation, and power DMOS output stages into a single IC. The device supports full, half, and quarter step resolutions via parallel interface inputs. It operates with a supply voltage range of 3V to 5.5V and drives loads between 8V and 36V. The maximum output current is 1.2A per phase. It utilizes a 48-LQFP-EP package with exposed pad for thermal management.
Feature Summary
- Integrates full control logic and power DMOS outputs for simplified design
- Supports selectable full, half, and quarter step microstepping resolutions
- Includes built-in current regulation and overtemperature protection
Applications
- General purpose stepper motor control systems
- Office automation equipment
- Industrial motion control applications
Procurement Notes
Verify the specific suffix JPTR against the manufacturer datasheet to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as indicated in official documentation. Check component lifecycle status, as sources indicate this part may be restricted for new designs due to minimum order quantity constraints or obsolescence notices.
Selection Notes
Select this component when a fully integrated solution for bipolar stepper motors is required. Ensure the load voltage does not exceed 36V and the continuous current requirement stays within the 1.2A limit. Verify that the parallel interface timing requirements align with the host controller capabilities. Consider thermal dissipation needs given the LQFP package configuration.
Part Context
This part belongs to the A3988 series of stepper motor drivers from Allegro MicroSystems. It is designed as a complete drive solution, eliminating the need for external gate drivers or complex logic circuits. The series is characterized by its ease of use and robust protection features for industrial environments.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official cross-reference documentation for verified alternatives.
