TMC7300-LA Smart Driver IC

TRINAMIC's TMC7300 is a low-voltage driver for one DC motor up to 2 A peak, or two DC motors up to 2.4 A peak. Operating on a single or dual Li-ion cell or at least 2 AA batteries, the TMC7300 is optimal for battery-operated equipment such as IoT and handheld devices, printers and POS applications, toys, cameras, and mobile medical devices.

Thanks to an integrated direct bridge, the chip can also be used to control solenoids, relays, and other actuators. Despite the small form factor, a QFN of 3 mm x 3 mm with 20-pins in total, the TMC7300 scores with a high-power density using integrated power MOSFETs and a complete integrated DC motor control logic. As such, it can control velocity and limit torque, or be used in torque-controlled operation.

For ease of use, the TMC7300 comes with a single-wire UART interface. Up to two DC motors can be controlled through it for direction, velocity, and torque. Together with TRINAMIC’s development environment, including open-source hardware and software, the chip allows for rapid prototyping at reduced overhead cost.

Protection and diagnostic features support robust and reliable operation, including PWM control for smooth acceleration and deceleration, an internal current limiter to protect both the DC motor and power source and mechanical load sensing. Part of the diagnostic features, the chip detects errors, including short detection and overtemperature. Once detected, the TMC7300 can disable the power stage and report the error via the interface or DIAG output.