TB9120FTG(EL)

Overview

The TB9120FTG(EL) is a bipolar stepper motor driver manufactured by Toshiba Semiconductor and Storage. It operates within a load voltage range of 4.5 V to 18 V and supports a maximum output current of 2 A. The device features a typical on-resistance of 0.8 Ω for its internal MOSFETs. It is housed in a solderable side-lead VQFN-28 package and is qualified under the AEC-Q100 standard for automotive applications. The component functions effectively across an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Generates micro-step sine waves directly from clock input signals without requiring high-performance MCU software
• Supports selectable micro-stepping resolutions including 1, 2, 4, 8, 16, and 32 steps per full step
• Integrates error detection capabilities such as stall detection and overcurrent protection

Applications

• Control of valves in automotive refrigerant circuits
• Actuation mechanisms for head-up displays
• General automotive stepper motor control systems

Procurement Notes

Verify the specific suffix designation against official documentation, as variations may exist between FTG and AFTG designations regarding guaranteed voltage ranges. Confirm that the selected variant meets the required AEC-Q100 qualification standards for your specific automotive application environment. Ensure compatibility with the intended clock input interface and power supply specifications before finalizing procurement.

Selection Notes

Select this component when designing systems that require simplified control interfaces driven primarily by clock signals rather than complex data buses. It is suitable for applications needing integrated micro-stepping generation to reduce noise and vibration. Consider the thermal performance provided by the VQFN-28 package with solderable side leads for effective heat dissipation in compact automotive enclosures.

Part Context

This part belongs to Toshiba's lineup of stepper motor drivers designed for broad automotive use. These ICs are engineered to provide high efficiency and precise motion control while minimizing electromagnetic interference through micro-stepping techniques. The family emphasizes reliability and ease of integration into vehicle electronic control units.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.