Mx1616 Motor Driver Datasheet Here

The MX1616 provides a compact and efficient solution for controlling two DC motors independently (or one 2-phase stepper motor) from a microcontroller like Arduino, ESP32, or Raspberry Pi. It is frequently found on small PCB modules designed for 2WD or 4WD robot chassis. Key Features (from Datasheet)

The MX1616 is commonly found in a SOP16 package, often pre-soldered onto breakout boards. VDDcap V sub cap D cap D end-sub (Pin 5): Power Supply Input (2V - 8.6V). Ground Connection. IN1, IN2 (Pins 6, 7): Control Inputs for Motor A. IN3, IN4 (Pins 10, 11): Control Inputs for Motor B. OUT1, OUT2 (Pins 2, 3): Outputs for Motor A. OUT3, OUT4 (Pins 14, 15): Outputs for Motor B.

The thermal protection circuit may be tripping. Ensure your motor's stall current does not exceed the 2.5A peak limit. Mx1616 Motor Driver Datasheet

AccelStepper stepper(AccelStepper::DRIVER, STEP_PIN, DIR_PIN);

The motor speed and direction are controlled by applying PWM (Pulse Width Modulation) signals to the input pins (IN1, IN2, etc.). Motor Status Stop (Standby) Forward (CW) Reverse (CCW) Brake/Short Circuit MX1616 Typical Application Circuit The MX1616 provides a compact and efficient solution

The (often labeled simply as MX1616) is a dual-channel brushed DC motor driver IC designed for low-voltage, high-efficiency applications such as battery-powered toys and small robotics. It utilizes an H-bridge structure with low-resistance MOSFETs to minimize heat dissipation and voltage drop. Core Technical Specifications Operating Voltage (VM) 2.0V – 10.0V DC (Standard modules typically 2V-10V) Logic Input Voltage 1.8V – 7.0V DC (Compatible with 3.3V and 5V MCUs) Continuous Output Current 1.3A – 1.5A per channel (depending on thermal conditions) Peak Output Current Up to 2.5A – 3.0A (short duration pulses) Internal Resistance ~0.4 ohms (low on-resistance MOSFETs) Standby Current Temperature Range -40°C to +80°C Pinout and Interface

The Mx1616 motor driver is a high-performance, high-power motor driver IC suitable for a wide range of applications. By understanding the features, benefits, and design considerations of the Mx1616, designers can create high-performance motor control systems with ease. This paper has provided an overview of the Mx1616 datasheet and explored its features, benefits, and applications, providing a useful resource for designers and engineers. VDDcap V sub cap D cap D end-sub

| Symptom | Likely Cause | Fix | |---------|--------------|-----| | Motor jerks, IC hot | Exceeding current limit | Reduce PWM frequency to <20kHz, add heatsink | | No movement, IC cool | Missing ground connection | Check GND pin continuity | | One motor always on | Floating input pin | Add 10k pull-down resistors on IN1/IN2 | | IC resets randomly | Power supply ripple | Increase bulk capacitance to 470µF |

| Parameter | Conditions | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | | 2.0 | - | 10.0 | V | | Logic Input Voltage | Input Pins (IN1, etc.) | 1.8 | - | 7.0 | V | | Continuous Output Current (Per Channel) | Varies with variant and cooling | 1.3 | 1.5 | 1.8 | A | | Peak Output Current | Short-duration, up to 10s | - | 2.5 | 3.0 | A | | Standby Current | All inputs LOW | - | - | 0.1 | µA | | Static Current (Iq) | | - | 190 | - | µA |

The MX1616 includes internal parasitic diodes to handle inductive flyback current. External Schottky diodes are generally not required unless driving highly inductive loads near the absolute maximum current rating. 6. Arduino Integration Example