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 resolutions of 1, 1/2, 1/4, 1/8, 1/16, and 1/32 steps. The device features a clock interface for control signals. Key electrical parameters include a maximum output current of 1.8 A, an operating supply voltage range of 4.5 V to 33 V, and a load voltage range of 4.5 V to 34 V. It operates within a temperature range of -40°C to +85°C and has a power dissipation rating of 3.65 W. The component is housed in a 32-VQFN package.

Feature Summary

• Supports multiple micro-step resolutions including full, half, quarter, eighth, sixteenth, and thirty-second steps for precise motion control.
• Integrates a clock interface for simplified digital control of stepping motor operations.
• Includes built-in protection mechanisms such as overcurrent detection and thermal shutdown to ensure reliable operation.

Applications

• Precision positioning systems requiring micro-stepping capabilities
• Automated office equipment such as printers and scanners
• Industrial automation controllers and actuators
• Medical devices requiring accurate motor movement

Procurement Notes

Verify the specific suffix EL against the latest official Toshiba datasheet to confirm packaging and tape specifications. Ensure the ordered quantity aligns with the manufacturer's standard reel size of 4,000 units if purchasing in bulk. Confirm that the application environment stays within the specified -40°C to +85°C operating temperature range to maintain performance integrity.

Selection Notes

Select this component when bipolar stepper motor control with high resolution is required. The 1.8 A output current suits moderate load applications. The clock interface simplifies design compared to PWM or step/dir interfaces. Consider the 32-VQFN package for surface-mount assembly constraints. Verify thermal management requirements given the 3.65 W power dissipation rating in the specific PCB layout.

Part Context

This part belongs to Toshiba's TB67S series of stepping motor drivers. It is designed for general-purpose motion control applications. The series offers various packages and current ratings. The TB67S539 variant specifically targets applications needing fine step resolution and robust protection features within a compact surface-mount footprint.

Replacement Considerations

Check Toshiba's official cross-reference documents for direct pin-compatible alternatives. Verify that any substitute maintains the same 1.8 A output current and 32-VQFN package dimensions. Ensure the replacement supports the required 1/32 micro-step resolution and clock interface compatibility.