A3973SLB

The A3973SLB is a 3-A peak full-bridge DMOS driver that is designed to drive low inductance bipolar, Hall-effect, and other brushless DC motors. It includes a full-bridge DMOS output stage, logic input buffers, and several other features to make it easy to interface the controller to a microcontroller.

This device provides three independent control inputs for controlling the motor direction and speed. The motor direction is controlled by the DIR input and the motor speed is controlled by a set of PWM inputs. The PWM signals can have a wide range of frequencies, from hundreds of hertz to many kilohertz. The device also includes built-in protection features such as thermal shutdown and current limit.

The A3973SLB enables efficient, easy to use hardware and control interface between a microcontroller and the motor. It has a very accurate reference voltage of 0.75 V to enable precise speed control. The device also features a standby mode and can be used to disable the motor power automatically when the microcontroller is turned off.

The A3973SLB can be used in applications such as pumps and fans, where energy efficient control of motor speed is needed. It is also suitable for applications requiring precise speed control, such as robotics and industrial automation. The device can also be used in automotive applications as an auxiliary driver for electric motors.

The A3973SLB is compatible with 5 V logic, and operates over a supply voltage range of 4.5 to 40 V. It is provided in a tiny 10-pin MSOP package and is suitable for use with both surface mount and through-hole circuit designs.

The A3973SLB is designed to drive low inductance, bipolar, Hall-effect and other brushless DC motors. It has a logic input buffer and provides three independent control inputs for controlling the motor direction and speed. The device includes protection features such as thermal shutdown and current limit. In addition, the A3973SLB can be used to disable the motor power automatically when the microcontroller is turned off, making it suitable for energy efficient control of motor speed.

In summary, the A3973SLB is a highly integrated device that enables efficient, easy to use hardware and control interface between a microcontroller and a low inductance, bipolar, Hall-effect and other brushless DC motors. It provides reliable motor control with speed accuracy, protection features and other features for energy efficient motor speed control. The device is provided in a tiny 10-pin MSOP package and is compatible with both surface mount and through-hole circuit designs.