TB67S179FTG,EL

Overview

The TB67S179FTG,EL is a unipolar stepper motor driver IC manufactured by Toshiba Semiconductor and Storage. It features an integrated power MOSFET parallel output configuration with four half-bridge outputs. The device supports a load voltage range of 10V to 60V and delivers a continuous output current of 1.5A. It operates on a logic supply voltage of 4.75V to 5.25V with a typical operating supply current of 2.5mA. The component is housed in a 48-VQFN (7x7) package with a bare pad for thermal dissipation. It functions within a junction temperature range of -20°C to 150°C.

Feature Summary

• Integrates full control and power stages for unipolar stepper motors using power MOSFET technology.
• Supports step resolutions from full step down to 1/32 microstepping via parallel interface.
• Provides high thermal performance capability with a maximum junction temperature rating of 150°C.

Applications

• General purpose stepper motor control systems
• Automation equipment requiring unipolar drive configurations
• Industrial motion control modules

Procurement Notes

Verify the specific suffix EL against official Toshiba documentation to confirm tape and reel packaging specifications. Ensure that the 48-VQFN footprint matches the target PCB layout, particularly regarding the exposed thermal pad requirements for adequate heat dissipation during operation.

Selection Notes

Select this component when a unipolar drive topology is required rather than bipolar. Consider the 1.5A current limit and 60V voltage ceiling relative to motor specifications. Evaluate the 150°C junction temperature rating against ambient conditions to determine if additional heatsinking is necessary beyond the PCB copper area.

Part Context

This part belongs to the TB67S series of stepping motor drivers from Toshiba. It is distinct from bipolar variants like the TB67S279 or higher current models such as the TB67S508. The TB67S179 specifically targets unipolar applications with integrated MOSFET outputs in a compact surface-mount package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Cross-reference with other Toshiba unipolar drivers only if electrical parameters match exactly.

FAQ

What is the supported step resolution range?

The device supports step resolutions ranging from full step to 1/32 microstepping.

Is this driver compatible with bipolar motors?

No, the TB67S179FTG,EL is designed specifically for unipolar stepper motors.