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TMC249A-SA

ADITMC249A-SA

Analog Devices Inc./Maxim Integrated
Bipolar Motor Driver HVCMOS SPI 28-SO
Active2,818 in stock
Datasheet Digi-Key Compare Prices

Overview

The TMC249A-SA is a high-current bipolar stepper motor controller designed to drive four external power MOSFETs in a half-bridge configuration. It features an SPI interface for communication and supports microstepping resolution from full step down to 1/64 step. This device is capable of controlling currents up to 7A while operating within a logic supply range of 3.3V to 5.5V and a motor supply range of 7V to 34V.

Why Choose This Part

The use of external MOSFETs allows for thermal management scalability and current handling up to 7A, far exceeding integrated solutions. It integrates advanced Trinamic features like stallGuard for sensorless stall detection and slope control to improve EMC performance and system reliability.

Applications

High-Power CNC Machinery
Driving large NEMA 23 or NEMA 34 motors where internal driver ICs cannot handle the required current.
Industrial Robotics
Precise motion control for robotic arms and automated guided vehicles using external FETs for high torque.
Automated Laboratory Equipment
Utilizing stallGuard for sensorless load monitoring and stall detection in liquid handling systems.
Large-Format 3D Printing
Managing high-inertia gantries with smooth 1/64 microstepping and mixed decay modes for reduced vibration.

Key Specifications

Function Controller - Commutation, Direction Management
Interface SPI
Technology HVCMOS
Applications General Purpose
Mounting Type Surface Mount
Package / Case 28-SOIC (0.295", 7.50mm Width)
Step Resolution 1 ~ 1/64
Voltage - Supply 3.3V ~ 5.5V
Motor Type - Stepper Bipolar
Output Configuration Pre-Driver - Half Bridge (4)
Operating Temperature -25degC ~ 125degC (TA)
Supplier Device Package 28-SO

Getting Started

Designers should begin by selecting external N-channel and P-channel MOSFETs that match the desired motor current and voltage requirements. Evaluation can be performed using Trinamic's TMCL-IDE software and dedicated evaluation boards to tune stallGuard thresholds and current control parameters via the SPI interface.

TMC249A Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
TMC249A-SA (this part) SOIC-28 2,818
TMC249A-LA VQFN-32 756

Also Consider

DRV8711 TITexas Instruments - A versatile bipolar stepper gate driver with an integrated stall detection algorithm and SPI configuration.
TMC249A-LA ADIAnalog Devices Inc. - The same controller functionality in a more compact 32-pin QFN package for space-constrained designs.

Categories

Motor & Motion Control > H-Bridge & DC Motor Drivers Industrial & Automation > Motor Control & Drives Industrial & Automation > Robotics Components