L6235PD

Overview

The L6235PD is a fully integrated DMOS driver for three-phase brushless DC motors, manufactured by STMicroelectronics. It operates within an 8 V to 52 V supply range and delivers a 5.6 A peak output current with a 2.8 A DC rating. The device features a typical RDS(ON) of 0.3 Ω at 25 °C and supports operating frequencies up to 100 kHz. It utilizes a PowerSO-36 surface-mount package and functions across a temperature range of -40 °C to +150 °C.

Feature Summary

• Integrates a constant off-time PWM current controller with slow decay synchronous rectification for precise current regulation.
• Includes dedicated decoding logic for single-ended Hall sensors supporting both 60° and 120° commutation sequences.
• Provides non-dissipative overcurrent detection on high-side MOSFETs alongside thermal shutdown and undervoltage lockout protections.

Applications

• Three-phase brushless DC motor control systems
• Industrial motion control applications
• Automotive ignition and motor driver circuits

Procurement Notes

Verify the specific suffix 'PD' against the manufacturer's official datasheet to confirm the PowerSO-36 package and reel packaging configuration. Ensure compatibility with the required Hall sensor interface and voltage levels before procurement. Cross-reference the ordering code with the latest product change notifications to verify manufacturing status and availability constraints.

Selection Notes

Select this component when a robust, high-current solution for three-phase BLDC motors is required in a surface-mount format. The integrated Hall decoder simplifies design complexity compared to discrete solutions. Consider the thermal performance of the PowerSO-36 package relative to the expected continuous load and ambient operating conditions.

Part Context

This part belongs to the L6235 family of DMOS drivers designed for high-performance motor control. It shares core functional specifications with variants like the L6235N (DIP package) and L6235Q (QFN package), differing primarily in physical footprint and mounting style while maintaining identical electrical characteristics and protection features.

Replacement Considerations

L6235N serves as a pin-compatible through-hole alternative within the same series. L6235Q offers equivalent functionality in a QFN48 package for space-constrained designs. Verify that any substitute maintains the 52 V maximum voltage rating and 5.6 A peak current capability.