L6229Q

Overview

The L6229Q is a fully integrated DMOS driver designed for three-phase brushless DC motors, manufactured by STMicroelectronics. It operates on an 8 V to 52 V supply and delivers a 2.8 A peak output current with a typical RDS(on) of 0.73 Ω at 25 °C. The device supports operating frequencies up to 100 kHz and features non-dissipative overcurrent protection, thermal shutdown, and under-voltage lockout. Packaged in a 32-pin VFQFPN (5x5 mm), it integrates a constant tOFF PWM current controller, slow decay synchronous rectification, and decoding logic for 60° or 120° Hall effect sensors.

Feature Summary

• Integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single BCDmultipower chip
• Includes built-in decoding logic for single-ended Hall sensors generating required power stage sequences
• Features non-dissipative overcurrent detection and protection on high-side MOSFETs alongside thermal shutdown

Applications

• Three-phase BLDC motor control systems
• Industrial automation drives
• Home appliance motor management

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature range. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure ordering documentation matches the exact part number to avoid functional discrepancies in motor driver configurations.

Selection Notes

Select this component when designing compact three-phase BLDC motor applications requiring integrated control and power stages. The 32-pin VFQFPN package suits space-constrained designs. Verify that the application voltage remains within the 8 V to 52 V range and that Hall sensor compatibility aligns with the internal decoding logic requirements.

Part Context

The L6229Q belongs to the STSPIN L62 family of extra-miniaturized motor drivers. It represents a highly integrated solution combining power and control functions. This series targets applications demanding reduced board space and simplified design complexity for brushless DC motor implementations.

Replacement Considerations

L6229PD: Alternative package variant offering similar functionality in a PowerSO-36 format.

FAQ

What types of Hall sensors does the L6229Q support?

The device includes decoding logic compatible with both 60° and 120° single-ended Hall effect sensors.

How does the L6229Q handle overcurrent conditions?

It provides non-dissipative overcurrent detection and protection specifically on the high-side power MOSFETs.