A3984SLPTR-T

Overview

The A3984SLPTR-T is a complete microstepping motor driver with a built-in translator, designed for bipolar stepper motors. It supports full-, half-, quarter-, and sixteenth-step modes. The device features an output drive capacity of up to 35 V and ±2 A. Key electrical parameters include a supply voltage range of 3 V to 5.5 V and a load voltage range of 8 V to 35 V. It operates within a temperature range of -20°C to +150°C (TJ). The component utilizes DMOS technology and is housed in a 24-TSSOP-EP package.

Feature Summary

• Built-in translator enables easy operation without external logic controllers
• Automatic current decay mode detection and selection between Slow and Mixed modes
• Synchronous rectification reduces power dissipation
• Integrated UVLO and thermal shutdown circuitry for protection

Applications

• Bipolar stepper motor control systems
• Microstepping motion control applications
• General purpose motor drivers requiring integrated translation

Procurement Notes

Verify the specific suffix 'SLPTR-T' against official Allegro MicroSystems documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the 24-TSSOP-EP configuration. Cross-reference datasheet revisions to validate thermal performance ratings under intended operating conditions.

Selection Notes

Select this component when a fully integrated solution with internal translation is required for bipolar stepper motors. It is suitable for designs needing support for multiple microstep resolutions including sixteenth-step modes. Consider the ±2 A output capability and 35 V load voltage rating for appropriate motor matching.

Part Context

This part belongs to the A3984 series of DMOS microstepping drivers from Allegro MicroSystems. It serves as a successor or equivalent to the discontinued A3984SLPTR variant. The series is characterized by integrated power stages and control logic for simplified system design.

Replacement Considerations

A3984SLPTR is listed as a parameter-equivalent replacement.