L6235QTR

Overview

The L6235QTR is a fully integrated DMOS three-phase motor driver designed for brushless DC motors. 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 across a temperature range of -40 °C to +150 °C. It features a constant OFF time PWM current controller, slow decay synchronous rectification, and Hall sensor decoding logic for 60° and 120° configurations.

Feature Summary

• Integrates isolated DMOS power transistors with CMOS and bipolar circuits using BCDmultipower technology
• Includes non-dissipative overcurrent protection on high-side MOSFETs and thermal shutdown
• Provides diagnostic output and tacho output for speed loop control
• Features cross-conduction protection and undervoltage lockout

Applications

• Three-phase BLDC motor control systems
• Industrial motion control applications
• Brushless DC motor drives requiring integrated protection

Procurement Notes

Verify the specific suffix 'QTR' indicates the reel or cut tape packaging variant distinct from the tray-packaged L6235Q. Confirm moisture sensitivity level requirements for storage and handling procedures prior to assembly. Ensure the ordering part number matches the exact package type and quantity format required by the manufacturing line.

Selection Notes

Select this component when a fully integrated solution for three-phase BLDC motors is required without external gate drivers. The built-in Hall sensor decoding simplifies design complexity compared to discrete solutions. Consider the 5.6 A peak current capability and low on-resistance for efficiency requirements in compact industrial or automotive motor drive designs.

Part Context

The L6235QTR belongs to the L6235Q series of DMOS motor drivers manufactured by STMicroelectronics. It shares core functional specifications with the standard L6235Q but differs in packaging configuration. This series is categorized under Motor / Motion / Ignition Controllers & Drivers within the PMIC product family.

Replacement Considerations

L6235Q is the primary alternative with identical electrical characteristics but utilizes QFN-48 tray packaging instead of reel/cut tape formats.