TB67S145FTG,EL

Overview

The TB67S145FTG,EL is a unipolar stepper motor driver IC manufactured by Toshiba Semiconductor and Storage. It features an integrated power MOSFET structure with a maximum output current of 3A per phase and supports a supply voltage range of 10V to 84V. The device operates within a temperature range of -20°C to +85°C and utilizes a 48-pin WQFN package measuring 7mm x 7mm. Designed for high-speed operation, it supports clock input frequencies up to 8.2MHz and offers step resolutions from full step to 1/32 microstepping. The component includes built-in protection mechanisms such as overcurrent shutdown and thermal shutdown to ensure reliable performance in industrial applications.

Feature Summary

• Integrates control logic and power stages into a single monolithic chip for simplified design
• Supports variable step resolution ranging from full step to 1/32 microstepping via external clock signals
• Includes hardware-based protection functions against overcurrent conditions and excessive junction temperature

Applications

• Industrial automation equipment requiring precise motion control
• Office automation devices such as printers and copiers
• Medical instrumentation systems needing compact motor drivers

Procurement Notes

Verify the specific suffix EL indicates tape and reel packaging when placing orders. Confirm that the required operating voltage does not exceed the 84V absolute maximum rating. Ensure thermal management solutions are adequate given the power dissipation characteristics of the WQFN-48 package. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate pin compatibility with existing PCB layouts before implementation.

Selection Notes

Select this component for applications requiring unipolar stepper motor control with high current capacity. Consider the 84V voltage tolerance for systems with significant back-EMF or inductive loads. Evaluate the 1/32 microstepping capability for applications demanding smooth motion profiles. Compare against bipolar drivers if the motor type differs. Assess the thermal requirements based on the expected duty cycle and ambient temperature conditions.

Part Context

This part belongs to Toshiba's TB67S series of stepping motor driver ICs. The series is characterized by high integration and robust protection features. The TB67S145 variant specifically targets unipolar configurations, distinguishing it from bipolar counterparts like the TB67S279. The family shares common interface protocols and protection architectures, facilitating modular design across different motor drive requirements.

Replacement Considerations

Direct substitutes include other Toshiba unipolar drivers such as the TB67S149FTG,EL which offers similar functionality but may differ in voltage ratings. Cross-reference electrical specifications carefully, particularly regarding maximum load voltage and output current capabilities. Verify package dimensions and pinout compatibility to ensure mechanical interchangeability without PCB redesign.