Mx1616 Motor Driver Datasheet Portable May 2026
Mx1616 Motor Driver Datasheet: A Complete Technical Deep Dive
Introduction
In the world of precision motion control, the choice of motor driver can make or break a project. Whether you are building a Computer Numerical Control (CNC) router, a 3D printer, a robotic arm, or an automated conveyor system, you need a reliable interface between your microcontroller (like an Arduino or Raspberry Pi) and your motors.
- Part Number: Mx1616
- Type: Motor Driver IC
- Package: SOP-8 (Small Outline Package)
- Operating Voltage: 4.5V to 18V
- Output Current: 1.5A (continuous), 2.5A (peak)
- Input Current: 10mA (max)
- Operating Temperature: -20°C to 85°C
- Features: Overcurrent protection, thermal shutdown, undervoltage lockout
5. Absolute Maximum Ratings
| 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 | Mx1616 Motor Driver Datasheet
- Phase A+ → OUT1, Phase A- → OUT2
- Phase B+ → OUT3 (Pin5), Phase B- → OUT4 (Pin8)
Sequence: 1) Forward step: IN1=1,IN2=0,IN3=1,IN4=0 → 2) Next step: IN1=0,IN2=1,IN3=1,IN4=0 → etc.
8. Important Design Notes
- Heat Dissipation: At continuous current > 1A, a thermal pad or airflow is recommended. The IC will enter thermal shutdown (~150°C) and auto-recover.
- Ground Separation: Connect
PGND (motor current) and GND (logic) at a single star point near the power supply to avoid logic glitches.
- PWM Frequency: Use 20–50 kHz for audible noise reduction. Lower frequencies (e.g., 1 kHz) reduce switching losses but may cause motor whine.
- Back-EMF Diodes: The MX1616 includes internal parasitic diodes; external Schottky diodes are not required for low-current motors (<1A) but improve reliability for inductive loads.
- VS vs. VCC:
VM can be higher than VCC. For example, VCC = 5V (logic), VM = 12V (motor).
- High power handling: The Mx1616 can handle up to 16A of continuous current and 30A of peak current, making it suitable for driving high-power motors.
- High efficiency: The Mx1616 has a high efficiency rating of up to 95%, reducing heat dissipation and increasing system reliability.
- Advanced control features: The Mx1616 includes features such as pulse-width modulation (PWM) speed control, braking, and motor direction control.
- Protection features: The Mx1616 includes built-in protection features such as overcurrent protection, overtemperature protection, and undervoltage protection.