L293N

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Power Management Integrated Circuit (PMIC) is made up of electronic components such as voltage regulators, motor drivers, controllers, and other components, which play an important role in controlling and regulating the current, changing the voltage, and achieving overall power conversion. Among all the components, Motor Drivers and Controllers are the two most important and widely used PMIC, which have made a significant contribution to the development of modern digital products. And L293N, as a common Motor Driver, is one of these two important components.

The L293N Motor Driver is a dual-channel H-bridge motor driver integrated circuit, which can controll two DC motors at the same time, or only one four-wire two-phase stepper motor. This integrated circuit is designed with a variety of functions and features, such as over-current protection, maximum output current in each phase can reach up to 600mA, high noise immunity, and low voltage drop without heat sink. On top of all these features, it has a wide operating voltage range and can work well with both inputs (380V) and outputs (5V).

The application field of the L293N is very wide, it is the perfect partner of many robots, and it can easily provide the required power to two different motors. By using two integrated circuit, it can be used to make cars, paint robots, and more. It can also be used in different projects, such as for educational purposes, controlling fans, lighting, etc. Besides these, it can also be used in remote control supplies, as well as many other industrial automation and robotic construction.

As for its working principle, the L293N Motor Driver is designed to work as a bridge between two different motor control modes. This bridge is established between two pairs of terminals, one pair is called the "driver output" and the other is called the "controlled output". The driver output can be either a "logic" or a "pulsed" output. On the other hand, the controlled output is only an "on/off" type output. In other words, it can only control the direction of the motor by external switch, and has no control on the speed.

Here is a simple way to understand this working principle better. Firstly, the input voltage from the source is sent to the driver output terminals. This voltage will turn the motors on, in the order of the instructions given by the commanding instructions, i.e. the input instructions. Then, the driver output voltage is sent to the "controlled output". The voltage will be passed through the transistor and will turn the motors off or on in a combination of two directions. For example, if the bottom driver is turned on, the motor will move in the clockwise direction; if the top driver is turned on, the motor will move in the counterclockwise direction. This is how the L293N Motor Driver works.

In conclusion, the L293N is one of the most important Motor Drivers and Controllers, which is widely used in many electronic devices. It has a wide array of features and advantages, such as, high noise immunity and low voltage drop; as well as a wide operating voltage range. Moreover, the application field of the L293N is very wide, it can be used to make a variety of robots and project, as well as for industrial automation and robotic construction. Furthermore, its easy to understand working principle, makes it even more appealing to many.

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