TB67S149HG

Overview

The TB67S149HG is a unipolar stepper motor driver manufactured by Toshiba Semiconductor and Storage. It supports an output current of 3A and operates with a load voltage up to 84V. The device features a clock input interface and provides 1/32 step resolution for precise motion control. It is housed in a QFN48 package measuring 7mm x 7mm. The component functions within a temperature range of -20°C to +85°C and dissipates up to 5W of power.

Feature Summary

• Integrates full control and power stages for unipolar stepper motors
• Supports high-resolution microstepping via clock input
• Includes built-in protection mechanisms for thermal and electrical safety

Applications

• Industrial automation systems
• Precision positioning equipment
• Office automation devices

Procurement Notes

Verify the exact suffix against official Toshiba documentation, as packaging or variant codes may differ from generic listings. Confirm the specific pinout and thermal pad requirements for your PCB layout. Ensure the supplier provides valid RoHS compliance certificates. Cross-reference the manufacturer part number directly with the datasheet to avoid counterfeit components.

Selection Notes

Select this driver when high-voltage unipolar stepper control is required with integrated power management. The 3A output capacity suits moderate-load applications. The QFN48 package offers a compact footprint for space-constrained designs. Consider thermal dissipation capabilities given the 5W power rating during operation.

Part Context

This component belongs to Toshiba's TB67S series of stepper motor drivers. The series is designed for general-purpose motion control applications requiring reliable performance. The TB67S149HG specifically targets unipolar configurations, distinguishing it from bipolar counterparts in the same family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.