STMicroelectronics

L298HN

L298HN Description

The L298HN from STMicroelectronics is a high-performance dual full-bridge driver IC designed for driving inductive loads such as DC motors, relays, solenoids, and stepper motors. Operating within a 4.5V to 7V supply voltage range, it supports load voltages from 4.8V up to 46V, making it suitable for a wide variety of industrial and automotive applications. The device is housed in a MULTIWATT-15 through-hole package, ensuring robust thermal performance and ease of integration. With peak output current capability of 2A per channel, it delivers reliable power handling while incorporating current limiting and over-temperature protection for enhanced system safety.

L298HN Features

• Bipolar Technology: Ensures high efficiency and low power dissipation.
• Half-Bridge (4) Configuration: Enables bidirectional control of two DC motors or a single stepper motor.
• Logic-Level Interface: Simplifies integration with microcontrollers and digital systems.
• Fault Protection: Built-in current limiting and thermal shutdown prevent damage under overload conditions.
• Wide Operating Range: Supports 4.8V–46V load voltage, accommodating diverse motor types.
• RoHS3 & REACH Compliant: Meets stringent environmental and safety standards.
• Low Moisture Sensitivity (MSL 1): Ensures reliability in humid environments.

L298HN Applications

The L298HN excels in applications requiring precise motor control and high-power switching, including:

• Robotics: Driving DC or stepper motors in robotic arms and mobile platforms.
• Automotive Systems: Actuators, power window controls, and wiper mechanisms.
• Industrial Automation: Solenoid valves, conveyor belts, and CNC machinery.
• Consumer Electronics: Appliances with motorized components (e.g., printers, scanners).
• Renewable Energy: Solar tracker systems requiring bidirectional motor control.

Conclusion of L298HN

The L298HN stands out as a versatile, rugged, and cost-effective solution for motor and inductive load driving. Its high voltage tolerance, robust protection features, and ease of interfacing make it a preferred choice over basic driver ICs. Ideal for harsh environments and high-reliability systems, it combines performance with compliance to global standards, ensuring longevity in demanding applications. Engineers favor this IC for its balance of power, protection, and integration simplicity, solidifying its role in modern motion control designs.