L6229QTR

Overview

The L6229QTR is a fully integrated DMOS driver designed for three-phase brushless DC motors, manufactured by STMicroelectronics. It operates within an 8 V to 52 V supply range and delivers a peak output current of 2.8 A with a typical on-resistance of 0.73 Ω at 25 °C. The device supports operating frequencies up to 100 kHz and includes a constant off-time PWM current controller. It features non-dissipative overcurrent protection, thermal shutdown, and undervoltage lockout. Packaged in a 32-pin VFQFPN (VQCCN) format, it functions across a temperature range of -40 °C to 150 °C.

Feature Summary

• Integrates isolated DMOS power transistors with CMOS and bipolar circuits for complete three-phase motor control
• Includes decoding logic for single-ended Hall sensors supporting both 60° and 120° configurations
• Provides diagnostic outputs and tachometer signals for closed-loop speed regulation
• Features slow decay synchronous rectification and cross-conduction protection

Applications

• Three-phase brushless DC motor drives
• Industrial automation motion control systems
• Home appliance motor management

Procurement Notes

Verify the specific suffix 'QTR' indicates the reel packaging variant when sourcing. Confirm that the component meets RoHS standards and EAR99 classification requirements. Ensure the ordering part number matches the exact package type and pin configuration required for the target PCB layout to avoid integration errors.

Selection Notes

Select this component for applications requiring high peak current handling and integrated commutation logic. It is suitable for designs needing robust protection against overcurrent and thermal stress without external discrete components. Consider the thermal performance limits and the specific Hall sensor compatibility when designing the interface circuitry.

Part Context

This part belongs to the L6229 family of motor drivers from STMicroelectronics. It represents the tape-and-reel version of the standard L6229 IC, optimized for automated surface-mount assembly processes. The technology combines BCD manufacturing capabilities to integrate power and control functions efficiently.

Replacement Considerations

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