TB67S581FNG,EL

Overview

The TB67S581FNG,EL is a bipolar stepper motor driver IC manufactured by Toshiba Semiconductor and Storage. It utilizes BiCD process technology to deliver high-voltage and high-current performance, rated at 50 V and 2.5 A. The device supports 32 micro-step resolution for precise motion control. It features an HTSSOP-28 package (9.7mm x 6.4mm) with four output channels. The load voltage range spans from 8.2 V to 44 V, while the operating temperature extends from -40°C to +85°C. Power dissipation is rated at 4 W.

Feature Summary

• Integrates advanced dynamic mixed decay (ADMD) technology for efficient motor current control and reduced vibration.
• Includes built-in error detection circuits comprising thermal shutdown (TSD), over-current shutdown (ISD), and power-on reset (POR).
• Features a built-in VCC regulator for internal circuit operation and allows customizable chopping frequency via external components.

Applications

• Precision positioning systems requiring micro-stepping capabilities
• Industrial automation equipment utilizing bipolar stepper motors
• Office automation devices such as printers and scanners

Procurement Notes

Verify the specific suffix EL against official Toshiba documentation to confirm tape-and-reel packaging specifications. Ensure that the HTSSOP-28 footprint matches the target PCB design, noting the 9.7mm x 6.4mm dimensions. Confirm thermal management requirements align with the 4 W power dissipation rating under expected ambient conditions.

Selection Notes

Select this component when bipolar stepper motor control requires 32 micro-step resolution within a compact HTSSOP-28 form factor. It is suitable for applications demanding integrated protection features like thermal and over-current shutdown. Consider alternative models in the TB67S series if higher continuous current ratings or different package types are required for the specific system constraints.

Part Context

This part belongs to the Toshiba Bipolar Stepper Motor Driver family, designed for high-performance motion control. It complements other variants in the series that offer different current ratings or step resolutions. The integration of ADMD technology distinguishes it from older PWM chopper designs, offering improved efficiency and smoother motor operation in modern embedded systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Evaluate cross-model compatibility within the TB67S series based on pinout and electrical parameter alignment before substitution.

FAQ

What type of drive control does the TB67S581FNG,EL support?

It supports full, half, quarter, and 32 micro-step operations using a PWM chopper mechanism.

How is the chopping frequency determined for this IC?

The chopping frequency can be customized by connecting external resistance and condenser components.