TB67H453FTG (QFN) Single Brushed DC Motor Driver - DC motor driver 4.5-44V/1.1A

Description

The Pololu TB67H453FNG (QFN) module is a compact H-bridge board that enables bidirectional control of a single DC motor or two unidirectional motors. The driver supports motor supply voltages in the range of 4.5 V to 44 V and provides a continuous output current of up to 1.1 A, with a default current limit set to around 2 A. Thanks to the built-in current sensing and regulation, it allows safe motor control without additional sensors, while integrated protections safeguard the system against overcurrent, overheating, and undervoltage. Additionally, the board includes reverse power connection protection, improving its resilience to wiring mistakes.

The TB67H453 driver requires a motor supply voltage in the range of 4.5 V – 44 V, applied to the VIN pin, which is protected against reverse polarity. The VM pin outputs the voltage after the protection circuit and can power other system components, ensuring protection against wiring errors. To exit the default sleep mode, a voltage must be applied to the SLEEP pin, which also affects the current limit threshold. This voltage can be shared with the microcontroller or dynamically provided from its output, allowing convenient sleep mode management. The chip offers three control modes: PH/EN (phase–enable), PWM (IN/IN), and independent half-bridge mode, selectable via the PMODE pin. In the popular PH/EN mode, the PH pin defines the motor’s rotation direction, while a PWM signal is applied to the EN pin to regulate speed. This method is especially recommended as it requires only one PWM signal and ensures smooth and linear speed control in drive/brake mode.

Standard 2.54 mm mounting holes allow convenient use of pin headers, wires, or direct soldering onto a PCB. Thanks to its compact size, the module can be easily integrated into hobby and professional projects such as mobile robots, drive mechanisms, or automation systems. Flexible logic supply in the range of 1.8 V to 5.5 V ensures compatibility with a wide variety of microcontrollers, including popular platforms like Arduino, STM32, and Raspberry Pi. This simple-to-use and reliable solution allows for quick integration of motor control into any electronic project, ensuring high performance and safe operation.

Features

• Supports one bidirectional DC motor or two unidirectional motors
• Motor supply voltage: 4.5 V to 44 V
• Output current: 1.1 A continuous (2 A default current limit)
• Logic supply voltage: 1.8 V to 5.5 V
• Built-in current sensing and regulation
• Two current regulation modes: cycle-by-cycle and fixed off time
• Control modes: PH/EN, PWM (IN/IN), independent half-bridges
• Protections: undervoltage, overcurrent, thermal shutdown, and reverse power connection
• Dimensions: 15 × 18 mm
• Compatible with 2.54 mm pin headers or wires