L6474PDTR Integrated Circuits (ICs)

Technology:	DMOS
Base Part Number:	L6474
Supplier Device Package:	PowerSO-36
Package / Case:	36-BSSOP (0.433", 11.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Voltage - Load:	8 V ~ 45 V
Voltage - Supply:	3.3V, 5V
Current - Output:	3A
Applications:	General Purpose
Step Resolution:	1 ~ 1/16
Series:	easySPIN
Interface:	SPI
Output Configuration:	Half Bridge (4)
Function:	Driver - Fully Integrated, Control and Power Stage
Motor Type - AC, DC:	--
Motor Type - Stepper:	Bipolar
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to L6474PDTR

The L6474PDTR is a dual full-bridge driver from STMicroelectronics specifically designed for driving a two-phase bipolar permanent magnet stepper motor. The device integrates two low-RDS(on) full-bridges capable of continuous current up to 2.6A each as well as a variety of control and protection features.

Application Field

The L6474PDTR is suitable for a wide variety of applications ranging from industrial automation to consumer and white goods. Applications include printers and scanners, industrial equipment such as pumps and valves, and even home automation.

Working Principle

The L6474PDTR is designed to drive a two-phase stepper motor. The device takes control commands in the form of digital input pins that are used to switch the full-bridges on and off. This switching is coordinated to generate the required stepping motion for the motor. Depending on the control sequence, various types of stepping motion can be achieved such as micro-stepping, full-stepping and half-stepping.The L6474PDTR allows for a range of protection features to protect both the motor and the driver itself. These features include thermal shutdown, overcurrent protection, short-circuit protection, overvoltage protection, and undervoltage protection.

Conclusion

The L6474PDTR is a dual full-bridge driver specifically designed for driving a two-phase bipolar permanent magnet stepper motor. Applications range from industrial automation to consumer and white goods. The various protection features allow for safe operation even in challenging environments.

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