TB6560AHQ

Overview

The TB6560AHQ is a PWM chopper-type bipolar driver IC for stepping motor control, designed for sinusoidal-input microstep control. It supports 2-phase, 1-2-phase, 2W1-2-phase, and 4W1-2-phase excitation modes. The device operates with a control voltage of 4.5V to 5.5V and a motor drive voltage (Vm) of 4.5V to 34V. It delivers an output current of 3A with a peak capability of 3.5A. The on-resistance (Ron) is typically 0.6 Ω, and the high output withstand voltage is 40 V. It features internal pull-down resistors of 100 kΩ, an output monitor pin, reset and enable pins, and thermal shutdown protection.

Feature Summary

• Single-chip motor driver for sinusoidal microstep control using BiCD process
• Forward and reverse rotation capability with selectable phase excitation modes
• High output withstand voltage and low on-resistance for reduced heat generation
• Integrated thermal shutdown and output monitor functions

Applications

• CNC engraving machines and milling equipment
• 3D printer axis motor drives
• Office automation devices such as printers and scanners
• Precision medical equipment like injection pumps

Procurement Notes

Verify the specific suffix (O,8) indicates the HZIP-25-P-1.27mm package when ordering. Confirm that the application requires a 3A continuous current rating compatible with the 0.6 Ω on-resistance. Ensure adequate thermal management is provided if operating near peak currents, as the datasheet notes heat reduction benefits but does not eliminate the need for cooling at high loads. Check for RoHS compliance status in the latest manufacturer documentation.

Selection Notes

Select this component for applications requiring low-vibration, high-performance forward and reverse driving of two-phase bipolar stepping motors using only a clock signal. It is suitable for systems needing microstep resolution up to 1/16 without complex external logic. Consider the 40 V withstand voltage and 3 A output current against motor requirements. Compare with the TB6560AFG if a lower peak current of 2.5 A is sufficient, noting its slightly higher on-resistance.

Part Context

The TB6560AHQ belongs to the Toshiba TB6560 series of PWM chopper-type bipolar stepper motor drivers. It utilizes BiCD technology to combine low resistance with high power dissipation capabilities. This series is designed to simplify system architecture by allowing microstep driving via clock input alone, reducing the dependency on microcontrollers for basic motion control tasks.

Replacement Considerations

The TB6560AFG is a documented alternative within the same family, offering a 2.5 A peak output current and 0.7 Ω typical on-resistance. Verify compatibility regarding current requirements and thermal performance before substitution.