저전압 양방향 DC 모터 드라이버 -A3908
(DC MOTOR 25 CLICK)
개요
- 본 제품은 저전압 양방향 DC 모터 드라이버 -A3908입니다.
- A3908칩을 탑재하고 있으며, 출력전류를 최대 500mA까지 조절이 가능합니다.
- 모터의 회전 방향, 브레이크 스탠바이 모드는 로직 입력 핀으로 제어가 가능합니다.
특징
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HOW DOES IT WORK?
DC Motor 25 Click is based on the A3908, a fully integrated low-voltage motor driver for DC motors from Allegro Microsystems. This Click board™ provides all the input and output capabilities necessary to drive DC motors (OUT terminal), alongside monitor diagnostic functions. The A3908 is rated for an operating voltage range compatible with both mikroBUS™ power rails and output currents up to 500mA, programmable via an external I2C-configurable digital potentiometer, the AD5171 from Analog Devices. The A3908 also has complete protection capabilities like thermal shutdown, undervoltage lockout, and crossover current (shoot-through) protection, allowing robust and reliable operation.
Logic pins labeled IN1 and IN2, routed on the default positions of RST and PWM pins of the mikroBUS socket, are provided to control the motor direction of rotation, brake, and standby modes. When both pins are in a high logic state, the A3908 goes into high-side brake mode, which turns on both source drivers. There is no protection during braking, so care must be taken to ensure that the peak current does not exceed the absolute maximum current.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type Brushed Applications Can be used for robotic actuators and pumps, battery-powered toys and games, low-noise instrumentation systems, and more On-board modules A3908 - bidirectional DC motor driver from Allegro Microsystems Key Features Adjustable output current up to 500mA, driver control via logic pins, additional operational modes, internal protection, wide operating voltage range, low power consumption, and more Interface GPIO,I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V