Motor Driver ICs — Integrated Circuits & Controllers

The L293D is a popular dual H-bridge motor driver IC capable of driving two DC motors or one stepper motor. It handles supply voltages up to 36V and output currents up to 600mA per channel. It features built-in flyback diodes for protection against inductive kickback, making it a common choice for hobbyist and embedded motor control projects.

A driver IC is an integrated circuit designed to control or interface with a load that requires more power than a standard logic output can supply. Driver ICs include motor drivers, gate drivers for MOSFETs and IGBTs, LED drivers, and LCD drivers. They translate low-level logic signals into the higher voltage or current levels needed to operate motors, transistors, displays, and other components.

Yes, the L298N dual H-bridge motor driver module is fully compatible with Arduino. Connect the Arduino's digital output pins to the L298N input and enable pins, supply separate motor voltage (up to 46V, 2A per channel) to the driver, and use PWM signals for speed control. Many libraries and tutorials are available to simplify integration with Arduino-based projects.

Motor Driver ICs can control a wide variety of motor types, including brushed DC motors, brushless DC (BLDC) motors, stepper motors, and servo motors. The appropriate IC depends on the motor type — for example, Toshiba's TB6xxx series targets stepper and BLDC motors, while Allegro MicroSystems specializes in BLDC and stepper drivers for automotive and industrial applications.

Commercial-grade motor driver ICs are designed for standard temperature ranges (typically 0°C to 70°C) and general-purpose applications. Military-specification (Mil-Spec) ICs meet stricter standards for extended temperature ranges, vibration, humidity, and reliability, making them suitable for defense, aerospace, and harsh-environment industrial applications. LEVEL SOLUTIONS offers both grades across all major manufacturers.

In automotive systems, Motor Driver ICs control actuators, HVAC blowers, power windows, seat adjusters, and electric power steering. Allegro MicroSystems and ROHM are recognized leaders in automotive-grade motor driver and power-analog ICs, providing brushless DC and stepper motor control designed for the thermal stress, EMI requirements, and reliability standards demanded by automotive environments.