L293D Motor Driver, Datasheet, Pinout, Arduino Control

L293D-C127 | l293D dual H-Bridge Motor driver IC DIP

L293D Pinout Equivalent

1：Overview of The L293D:

L293D is a dual H-bridge motor driver chip launched by STMicroelectronics. It is mainly used to control the forward and reverse rotation, start and stop, and speed regulation of DC motors and stepper motors.The dual H-bridge can independently control the left and right wheel motors, support forward and reverse rotations and PWM speed regulation, and realize actions such as moving forward, backward, and turning.
Supports wide voltage (4.5V – 36V), is compatible with multiple types of motors, and has built-in short-circuit protection to avoid damage from stalling.

2：L293D  Important pin function definition:

3：Alternative model recommendation:

TB6612FNG: TB6612FNG is the first choice for low-voltage, high-efficiency, and compact motor drives, especially suitable for lithium battery-powered devices and scenarios sensitive to volume. Compared with L293D/L298N, it has obvious advantages in power consumption and control flexibility and adaptability. It is an ideal choice for small robots, model airplanes, and smart home devices.

DRV8833: The DRV8833 is a single-channel H-bridge motor driver chip introduced by Texas Instruments (TI), designed for compact size and low power consumption scenarios. It can drive both DC motors and stepper motors. With a wide input voltage range of 1.8V to 10.8V, it is compatible with lithium batteries (3.7V) and USB power supplies. The continuous output current of 1.5A meets the needs of small to medium power applications. It features an ultra-small WCSP package measuring just 2mm x 2mm, making it suitable for tight space layouts.

L9110S: The L9110S is a single-channel H-bridge motor driver IC designed for small DC motors. It features a DIP-8 through-hole package, is compact, and cost-effective (approximately $0.15). With a wide input voltage range of 2.5 to 12V, it is compatible with dry batteries (3V), lithium-ion batteries (3.7V), and USB power sources. The continuous current rating is 800mA, with a peak current of 1.5A, making it suitable for applications such as toy cars and small fans.

L298N: The L298N is a commonly used dual full-bridge DC/stepper motor driver module that supports controlling 2-4 DC motors or 1 two-phase stepper motor. It operates with a wide voltage input of 12V-48V (external power required), offering a maximum continuous current of 2A per bridge (peak 3A) and includes built-in overheat protection and flyback diodes.