L6208QTR

Overview

The L6208QTR is a fully integrated DMOS bipolar stepper motor driver manufactured by STMicroelectronics, utilizing BCD multipower technology. It operates within an 8 V to 52 V supply range and delivers a peak output current of 5.6 A with a typical on-resistance of 0.3 Ω at 25 °C. The device supports operating frequencies up to 100 kHz and functions reliably across a temperature range of -40 °C to +150 °C. Packaged in a VFQFPN-48 (7x7 mm) surface-mount format, it integrates dual independent constant tOFF PWM current controllers, non-dissipative overcurrent protection, thermal shutdown, and undervoltage lockout for robust motor control.

Feature Summary

• Integrates dual DMOS full bridges with non-dissipative overcurrent protection and thermal shutdown mechanisms.
• Features dual independent constant tOFF PWM current controllers for precise chopping regulation.
• Includes decoding logic supporting both full and half-step drive sequences for bipolar stepper motors.

Applications

• Bipolar stepper motor control in industrial automation systems
• Precision positioning applications requiring fast decay quasi-synchronous rectification
• Motion control modules utilizing full or half-step drive modes

Procurement Notes

Verify the specific suffix QTR indicates tape and reel packaging when sourcing components. Confirm that the ordering part number matches the required package type and compliance standards. Ensure compatibility with the intended voltage and current requirements before procurement. Cross-reference the manufacturer datasheet for accurate pinout and electrical specifications.

Selection Notes

Select this component for applications requiring high peak current capability and integrated protection features. The wide operating voltage range suits various power supply configurations. Consider the thermal performance and package size for space-constrained designs. Verify interface compatibility with the host controller for step and direction signals.

Part Context

The L6208QTR belongs to the L6208Q series of stepper motor drivers from STMicroelectronics. It is designed as a complete solution for driving two-phase bipolar stepper motors, combining power transistors with control logic on a single chip. This integration simplifies circuit design by reducing external component count.

Replacement Considerations

Direct substitutes include other variants within the L6208 family such as L6208D or L6208PD, though package differences exist. Evaluate pin compatibility and thermal characteristics when considering alternative packages. Consult official documentation for cross-reference details.