L6208Q

Overview

The L6208Q is a fully integrated DMOS stepper motor driver utilizing BCD multipower technology. It operates with an 8 V to 52 V supply and delivers a 5.6 A peak output current. The device features a typical RDS(on) of 0.3 Ω at 25 °C and supports operating frequencies up to 100 kHz. It includes non-dissipative overcurrent protection, thermal shutdown, and undervoltage lockout. The component is housed in a QFN-48 package (7 x 7 mm) and functions within a temperature range of -40 °C to +150 °C.

Feature Summary

• Integrates dual independent constant tOFF PWM current controllers for precise chopping regulation.
• Features fast/slow decay synchronous rectification and fast decay quasi-synchronous rectification.
• Includes decoding logic for full and half-step drive sequences.
• Provides cross-conduction protection and integrated fast freewheeling diodes.

Applications

• Driving two-phase bipolar stepper motors
• Industrial automation control systems
• Motion control applications requiring micro-stepping

Procurement Notes

Verify the specific suffix and package configuration against official STMicroelectronics documentation before procurement. Confirm that the QFN-48 variant matches the required footprint and pinout for the target design. Ensure compliance with RoHS standards and moisture sensitivity levels as specified in the datasheet. Cross-reference the ordering part number to avoid confusion with other L6208 family members.

Selection Notes

Select the L6208Q when a compact solution with high peak current capability is required for bipolar stepper motors. Consider the 52 V maximum voltage rating and 5.6 A peak current for demanding loads. Evaluate the thermal performance requirements given the QFN-48 package size. Verify compatibility with 5 V or 3.3 V logic inputs if interfacing with low-voltage microcontrollers.

Part Context

The L6208Q belongs to the L62xx series of dual brush DC and stepper motor drivers from STMicroelectronics. It is designed for industrial applications requiring robust motor control. The device integrates power transistors with CMOS and bipolar circuits on a single chip, offering a complete solution for driving stepper motors without external discrete components.

Replacement Considerations

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