TB67S149AFTG,EL

Overview

The TB67S149AFTG,EL is a unipolar stepper motor driver manufactured by Toshiba Semiconductor and Storage. It features an integrated power MOSFET architecture with four output channels capable of delivering up to 3 A continuous current per phase. The device supports a load voltage range from 10 V to 40 V and operates within a temperature range of -20°C to +85°C. It accepts parallel interface inputs and offers step resolution options including full, half, quarter, eighth, sixteenth, and thirty-second steps. The component is housed in a 48-pin WQFN package measuring 7 mm by 7 mm.

Feature Summary

• Integrates control logic and power stages for unipolar stepper motors
• Supports high-resolution microstepping down to 1/32 step
• Includes built-in protection mechanisms against overcurrent and thermal overload

Applications

• Industrial automation equipment
• Office automation devices such as printers and scanners
• Security systems requiring precise motion control

Procurement Notes

Verify the complete part number including the suffix EL to ensure correct packaging configuration. Confirm that the application circuit matches the specified 10 V to 40 V load voltage range. Ensure thermal management solutions are adequate for the expected power dissipation levels under operating conditions. Check RoHS compliance status if required by specific regional regulations.

Selection Notes

Select this component when driving unipolar stepper motors requiring up to 3 A per phase. Consider the 48-WQFN package size for space-constrained designs. Evaluate the need for microstepping capabilities versus simpler full-step operation. Verify compatibility with the system's logic voltage levels for the parallel interface inputs.

Part Context

This part belongs to Toshiba's series of fully integrated stepping motor drivers. These components combine control circuits and power MOSFETs on a single chip to simplify design. The TB67S149AFTG,EL specifically targets applications needing moderate current drive with high resolution. It serves as a compact solution for replacing discrete driver implementations.

Replacement Considerations

TB67S149HG