Mx1616 Motor Driver Datasheet

The Mx1616 is a dual H-bridge motor driver. An H-bridge is an electronic circuit that allows a voltage to be applied across a load in either direction. This functionality is what allows a motor to spin forward and backward.

Unlike older motor drivers like the L298N, which are bulky and inefficient due to high internal resistance, the Mx1616 utilizes modern MOSFET technology (often based on the MX1616 chip or similar architecture) to offer high efficiency and low heat dissipation in a tiny form factor.

| MS1 | MS2 | MS3 | Microstep Resolution | | :--- | :--- | :--- | :--- | | L | L | L | Full Step | | H | L | L | 1/2 Step | | L | H | L | 1/4 Step | | H | H | L | 1/8 Step | | H | H | H | 1/16 Step | Mx1616 Motor Driver Datasheet

Note: "L" = Logic Low (0V), "H" = Logic High (3.3 or 5V).

| Parameter | Condition | Min | Typ | Max | Unit | |-------------------------------|--------------------------|------|-----|------|-------| | Quiescent Current (standby) | All IN = 0V | - | 0.5 | 5 | µA | | Quiescent Current (active) | No load, both channels on| - | 1.2 | 3 | mA | | Output High R_DS(on) | I_OUT = 1A | - | 0.22| 0.32 | Ω | | Output Low R_DS(on) | I_OUT = 1A | - | 0.23| 0.33 | Ω | | Total R_DS(on) (H+ L) | I_OUT = 1A | - | 0.45| 0.65 | Ω | | Logic Input Current | V_IN = 3.3V or 0V | - | 5 | 20 | µA | | Thermal Shutdown Threshold | Die temperature | 150 | 165 | 180 | °C | | UVLO Threshold | VCC rising | 2.1 | 2.3 | 2.5 | V | The Mx1616 is a dual H-bridge motor driver

The Mx1616 module usually comes with built-in decoupling capacitors. However, if your motors are noisy (causing the microcontroller to reset), check the datasheet recommendations for adding a large electrolytic capacitor (e.g., 100uF) across the VM and GND terminals near the driver.

| Parameter | Symbol | Min | Max | Unit | |-------------------------------|----------|--------|--------|--------| | Motor Power Supply Voltage | VCC | -0.3 | 13.5 | V | | Input Logic Voltage | V_IN | -0.3 | 6.5 | V | | Peak Output Current (tp < 1s) | I_PEAK | - | 2.8 | A | | Continuous Output Current | I_CONT | - | 1.5 | A | | Maximum Junction Temperature | T_J | -40 | +150 | °C | | Storage Temperature | T_STG | -55 | +150 | °C | | Parameter | Condition | Min | Typ

WARNING: Stresses beyond these values may cause permanent damage.

| Version | Date | Change Description | |---------|------------|----------------------------------------| | 1.0 | 2023-01-15 | Initial release | | 1.1 | 2023-05-20 | Added thermal derating curve | | 1.2 | 2024-01-10 | Updated UVLO & typo correction in pin5 |