LB1845L-E

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The LB1845L-E is a two-phase, full-bridge bipolar switching stepper motor driver IC. This motor driver consists of two H-bridges, each capable of driving a single phase of the stepper motor. Each phase can take up to 1.8A of current and the total current that can be supplied to the stepper motor is up to 3.6A. This IC supports a wide operating voltage range from 3.0V to 35V and also offers high frequency PWM current phase control, enabling smooth and quiet operation of the motor.

In order to ensure consistent performance, the LB1845L-E includes several protection features such as over-temperature, over-voltage, under-voltage and short-circuit protection. In addition, the device also features a built-in brake circuit which enables quick deceleration of the motor. This feature is especially helpful for applications requiring precise positioning.

The motor driver\'s integrated state machine provides a simple and reliable interface for microcontrollers. The motor driver has two control input pins, STEP and DIR, and two direction output pins, M1/M2 and M3/M4. These pins allow the microcontroller to control the direction of the motor and give it the ability to set a maximum frequency of operation.

The motor driver also has two auxiliary control pins, ENABLE and PHASE, which allow the user control of the motor current and maximum torque. The ENABLE pin is used to enable and disable the device, while the PHASE pin is used to control the maximum torque of the motor and can be used to adjust the maximum speed of the motor. The device also includes an over-current sense circuit which can detect and then shut off the device if a short circuit has occurred, preventing damage to the motor.

Overall, the LB1845L-E is a versatile motor driver IC suitable for a wide range of applications including robotics, industrial automation, and consumer goods. Its wide operating voltage range and built-in protection make it ideal for use in harsh environments and its advanced circuitry allows for smooth and accurate control of the motor.

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