TB67S549FTG,EL

Overview

The TB67S549FTG,EL is a bipolar stepper motor driver IC utilizing Toshiba DMOS technology. It features an integrated constant current control function and charge pump circuit, eliminating the need for external current detection resistors or capacitors. The device supports a motor supply voltage range of 4.5V to 33V with an absolute maximum output voltage rating of 40V. It delivers a rated output current of 1.5A per phase. The component operates within a temperature range of -20°C to 85°C and is housed in a compact 24-VFQFN package measuring 4.0mm x 4.0mm.

Feature Summary

• Integrates constant current control and charge pump circuits to minimize external component requirements.
• Employs DMOS FET output transistors for efficient power handling in a small footprint.
• Includes built-in safety mechanisms such as overcurrent detection, thermal shutdown, and undervoltage lockout.

Applications

• Printers
• Multifunction Printers (MFP)
• Automated Teller Machines (ATM)
• Currency Exchange Machines
• Surveillance Cameras

Procurement Notes

Verify that the specific suffix EL corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the 24-VFQFN pinout matches the target PCB layout design. Ensure that the thermal management strategy accounts for the QFN24 package characteristics under expected load conditions. Validate compatibility with the system's logic voltage levels for clock and step inputs before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring space-constrained designs where reducing external passive components is critical. It is suitable for 12V or 24V powered systems needing reliable bipolar stepper motor control. Consider the 1.5A current limit when sizing motors. Evaluate the trade-off between the smaller QFN24 package and thermal dissipation capabilities compared to larger packages like QFN32 if higher continuous currents are anticipated.

Part Context

This part belongs to Toshiba's TB67S series of stepping motor driver ICs designed for office automation and financial devices. It represents a newer generation offering compared to the TB67S539FTG, featuring a significantly reduced installation area. The series focuses on simplifying user design by integrating functions that previously required discrete external circuitry, thereby lowering total system cost and board space.

Replacement Considerations

TB67S539FTG,EL