TB6674FG,8,EL

Overview

The TB6674FG,8,EL is a bipolar stepper motor driver IC from Toshiba Semiconductor and Storage. It features an integrated power MOSFET half-bridge configuration with four outputs. The device supports a load voltage range of 2.7 V to 22 V and delivers an output current of 350 mA. It operates on a supply voltage between 4.5 V and 5.5 V, with a maximum power dissipation of 1.4 W. The component functions within a temperature range of -30°C to +75°C and utilizes parallel interface inputs. It is housed in a 16-HSOP package.

Feature Summary

• Integrates control logic and power stages for two-phase bipolar stepper motors
• Supports full integration of drive circuits using internal power MOSFETs
• Includes built-in protection mechanisms for system reliability

Applications

• Head actuator drives for floppy disk drives
• General purpose motion control systems
• Automation equipment requiring low-power stepper driving

Procurement Notes

Verify the specific suffix EL against official Toshiba documentation to confirm packaging and reel specifications. Confirm RoHS compliance status directly with the manufacturer as regulatory data may vary by production batch. Ensure the HSOP-16 thermal pad connection requirements are met during PCB layout to maintain the specified 1.4 W power dissipation capability. Check for obsolescence notices or design-in restrictions prior to final procurement.

Selection Notes

Select this component when a compact surface-mount solution for bipolar stepper motors is required. The 350 mA output current suits small form-factor applications such as FDD head actuators. Consider the 16-HSOP package constraints for thermal management. Verify that the 4.5 V to 5.5 V logic supply aligns with the system's control voltage levels before implementation.

Part Context

This part belongs to the TB6674 series of stepping motor driver ICs. The series is designed for applications requiring reduced size and lower power consumption. The FG variant specifically denotes the lead-free product version within the family. It serves as a specialized driver for induced loads in compact electronic devices.

Replacement Considerations

TB6674PG,C,8 is a documented alternative within the same series, offering through-hole DIP-16 packaging and a 400 mA output current. Verify pin compatibility and thermal performance differences when substituting.