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Product Detailed Parameters
- Description：IC MTR DRV BIPOLR 3-5.5V 24TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：Bipolar
- Motor Type - AC, DC：-
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (4)
- Interface：Logic
- Technology：DMOS
- Step Resolution：1, 1/2, 1/4, 1/16
- Applications：General Purpose
- Current - Output：2A
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：8V ~ 35V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：24-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The A4982SLPTR-T is a fully integrated bipolar stepper motor driver manufactured by Allegro MicroSystems. It combines logic, control, and power stages in a single DMOS package. The device supports microstepping resolutions of full, half, quarter, and 1/16 step. It operates with a supply voltage range of 3V to 5.5V for logic and an output load voltage range of 8V to 35V. The maximum continuous output current is rated at 2A. It utilizes a 24-TSSOP-EP surface-mount package with an exposed pad for thermal management. The junction temperature range spans from -20°C to 150°C.
Feature Summary
- Integrates all necessary logic, control circuitry, and high-current power outputs into a single monolithic IC.
- Supports multiple microstepping modes including full, half, quarter, and 1/16 step resolution for smooth motion control.
- Features an internal fixed off-time current regulator that simplifies design and maintains stable current across varying voltages.
Applications
- General purpose bipolar stepper motor control
- Printers and scanners
- Valve actuators
Procurement Notes
Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the 24-TSSOP-EP pinout matches the target PCB footprint. Ensure the application voltage does not exceed the 35V limit. Check RoHS compliance status if required by project specifications. Validate thermal requirements given the exposed pad design.
Selection Notes
Select this component for applications requiring a compact solution for bipolar stepper motors. It is suitable where space constraints favor the TSSOP package over larger alternatives. Consider the 2A current rating against peak motor demands. Evaluate the need for 1/16 microstepping capability for precision positioning tasks.
Part Context
This part belongs to the A498x family of stepper motor drivers from Allegro MicroSystems. It serves as a complete drive solution for bipolar motors. The SLPT designation identifies the specific TSSOP-EP package variant. It is designed to replace discrete driver circuits with a simplified integrated approach.
Replacement Considerations
The A4982SETTR-T is a confirmed substitute offering identical electrical performance in a 32-QFN package. Verify pin compatibility and thermal dissipation differences between the TSSOP and QFN packages before substitution.
