TB67S539SFTG,EL

Overview

The TB67S539SFTG(EL) is a BiCD stepping motor driver IC manufactured by Toshiba Semiconductor and Storage. It supports bipolar stepper motors with a maximum output current of 1.8 A and operates within a supply voltage range of 4.5 V to 33 V. The device features a 32-VQFN (5x5 mm) surface-mount package and includes an integrated clock interface for step control. It offers selectable micro-stepping resolutions, including full, half, quarter, eighth, sixteenth, and thirty-second steps. The component is rated for operation between -40°C and +85°C, with a power dissipation capacity of 3.65 W and a maximum operating frequency of 250 kHz.

Feature Summary

• Integrated clock interface for direct step control without complex logic
• Supports multiple micro-stepping resolutions from full step to 1/32 step
• Built-in protection mechanisms against overcurrent and thermal overload

Applications

• Precision positioning systems in industrial automation equipment
• Motion control modules for office automation devices
• Stepper motor drives in medical instrumentation requiring accurate movement

Procurement Notes

Verify the specific suffix EL indicates the tape and reel packaging configuration required for automated assembly processes. Confirm that the 32-VQFN footprint matches the target PCB layout dimensions and thermal pad requirements. Ensure the design accommodates the specified 250 kHz maximum operating frequency for the intended clock signal input.

Selection Notes

Select this component when a compact solution for bipolar stepper motors is required with integrated micro-stepping capabilities. It is suitable for designs needing a clock-driven interface rather than PWM or SPI communication. Consider the 1.8 A output limit and 33 V maximum supply voltage when sizing the external power stage and load requirements.

Part Context

This part belongs to the TB67S series of stepping motor drivers from Toshiba. It is designed as a fully integrated controller and power stage, eliminating the need for external discrete components for basic motor drive functions. The series focuses on providing high precision through micro-stepping while maintaining a small form factor suitable for space-constrained electronic applications.

Replacement Considerations

Check for pin-compatible alternatives within the same Toshiba family that may offer different current ratings or interface types. Verify if newer revisions of the TB67S series provide updated thermal performance or additional protection features.