L6474H

Technology:	DMOS
Base Part Number:	L6474
Supplier Device Package:	28-HTSSOP
Package / Case:	28-TSSOP (0.173", 4.40mm 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:	Tube

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<div class="PMIC-motors"><p>The L6474H from STMicroelectronics is a Motor Driver &amp; Controller that belongs to their Power Management and Motor Control (PMIC) family. This controller integrates a monolithic motor driver for brushing DC motors applications, as well as a 2.5A/1A class D gate driver. This controller offers superior integration, strong safety features and complete diagnostics to prevent costly failures during the operation of a motor driver.</p><p>The L6474H has a range of applications in automated factory systems, home appliances, pumps, and other motion control products. It is capable of handling high-power loads, making it suitable for controlling a variety of DC motors and mechanical actuators. The main advantage of this controller is its ability to provide highly accurate and fast current compensation resulting in precise motor control, even in challenging environments. </p><p>One of the main features that makes the L6474H a reliable motor driver is its robust safety system. It is designed with a thermal protection that is able to detect excessive current and shutdown in order to protect the motor driver from any potential damages. The controller is also pre-programmed with a variety of protection features including overvoltage, undervoltage, low voltage lockout and overcurrent. This combined safety system ensures correct operation and protection from unexpected shutdowns. </p><p>In addition, the L6474H controller is capable of performing a range of diagnostics to ensure the health of the motor driver. This includes monitoring of the current status and warning of any potential fault conditions that could lead to problems with the motor driver. The controller can also detect any short circuits and provide feedback on any drivability issues that could affect the operation of the motor driver.</p><p>The working principle behind the L6474H controller is based on an integrated power driver stage, an input/output full bridge (H-Bridge) and a gate driver stage with a Smartsense gate driver. The full bridge is used to control the current going to the motor, while the gate driver enables fast switching of the power to the motor. This is done by varying the voltage at the motor terminals according to a proportional control scheme. The controller also uses PWM (pulse-width modulation) to control the motor speed. When the current flowing through the driver is kept at a constant level, the motor speed is determined by the PWM duty cycle.</p><p>The L6474H is a leadless 34-pin, dual in line (DIP) package, highly integrated motor driver and controller. This controller offers superior integration with power and control, fast current compensation and provides a range of safety and diagnostic features, making it an ideal controller for high-power DC motor applications.</p></div>

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