L6472PDTR

Overview

The L6472PDTR is a fully integrated microstepping motor driver with an embedded motion engine and SPI interface, manufactured by STMicroelectronics. It operates on a supply voltage range of 8 V to 45 V and delivers a peak output current of 7.0 A, with an RMS rating of 3.0 A. The device utilizes a PowerSO-36 package and supports bipolar stepper motors up to 1/16 microstepping resolution. It features programmable speed profiles, adaptive decay current control, and comprehensive protection mechanisms including overcurrent and overtemperature safeguards.

Feature Summary

• Integrates a dual low R DS(on) DMOS full bridge with accurate on-chip current sensing for non-dissipative current control.
• Digital control core generates user-defined motion profiles including acceleration, deceleration, speed, and target position via dedicated registers.
• Equipped with a rich set of protections such as thermal shutdown, low bus voltage detection, and programmable overcurrent protection.
• Supports daisy-chain configuration through standard SPI interface for multi-motor application scalability.

Applications

• Driving two-phase bipolar stepper motors with microstepping capabilities
• Evaluation of multi-motor applications using daisy-chain configurations
• Industrial automation systems requiring precise motion control

Procurement Notes

Verify the specific suffix 'PDTR' corresponds to the tape-and-reel packaging variant when sourcing components. Confirm that the required operating voltage and current ratings align with the system's power supply design. Ensure compatibility with the SPI communication protocol used in the host controller. Check for any recent product change notices regarding package labeling or manufacturing lineage updates from the manufacturer.

Selection Notes

Select this component for applications requiring a fully autonomous stepper motor driver with integrated motion control logic. It is suitable for designs needing high peak current handling and robust protection features without external discrete power switches. Consider the PowerSO-36 package for its thermal performance in space-constrained layouts. Evaluate the need for daisy-chain support if multiple units are controlled via a single SPI bus.

Part Context

The L6472PDTR belongs to the STSPIN L64 series of motor drivers developed by STMicroelectronics. This series is designed for advanced stepper motor control applications, combining power stage integration with sophisticated digital motion engines. The PDTR suffix indicates the specific surface-mount packaging and reel configuration for automated assembly processes.

Replacement Considerations

L6474PDTR is listed as a parameter-equivalent substitute part number available from the manufacturer.