TB67H450 2CH 50V 3.5A DC Brushed Motor Driver IC SOP-8

TB67H450 2CH 50V 3.5A DC Brushed Motor Driver IC SOP-8 is a high-power, monolithic H-bridge driver specifically engineered to handle the demanding requirements of modern brushed DC motors. This compact integrated circuit utilizes Toshiba’s advanced BiCD process, which allows it to support a wide operating voltage range up to 50V while delivering a substantial output current of 3.5A. Consequently, it provides a robust solution for designers who need to control high-torque motors without occupying significant board space. The device supports four essential modes including forward, reverse, short brake, and stop, offering comprehensive control over motor dynamics. Furthermore, the inclusion of integrated protection features like thermal shutdown and overcurrent detection ensures long-term system reliability. Therefore, you can confidently deploy the TB67H450 in battery-powered equipment or industrial robotics where efficiency and power density remain critical priorities.

Key Features:

• High Voltage and Current Rating: The IC supports a maximum motor power supply of 50V and an output current of 3.5A, making it suitable for medium to large DC motors.
• Low On-Resistance: Features a combined (high + low side) MOSFET on-resistance of only 0.6 Ω (typical), which minimizes heat generation during high-load operation.
• Comprehensive Error Detection: Includes built-in thermal shutdown (TSD), overcurrent protection (ISD), and under-voltage lockout (UVLO) to prevent hardware failure.
• Multiple Control Modes: Supports standard PWM control for speed regulation alongside brake and standby functions for enhanced power management.
• Single Power Supply Operation: The internal regulator allows the chip to operate using only the motor supply voltage, simplifying the overall power architecture.

Technical Specifications:

• Operating Supply Voltage (V_CC): 4.5 V to 44 V
• Absolute Maximum Voltage: 50 V
• Output Current (I_OUT): 3.5 A peak
• Logic Input Voltage: 0 V to 5.5 V
• PWM Frequency Support: Up to 400 kHz
• On-Resistance (R_on): 0.6 Ω (Typical, High + Low side)
• Standby Current: ≤ 1 μA (Maximum)
• Operating Temperature: −40°C to +85°C

Mechanical Specifications:

• Package Type: SOP-8 (Small Outline Package)
• Mounting Style: Surface Mount Device (SMD)
• Lead Finish: Matte Tin / Lead-Free compliant
• Encapsulation: High-reliability plastic mold

Dimensions:

• Body Length: ≈ 4.9 mm
• Body Width: ≈ 3.9 mm
• Total Height: ≈ 1.75 mm
• Pin Pitch: 1.27 mm (Standard SOP)

Pinout and Wiring:

• Pin 1 (GND): Connect to the common system ground.
• Pin 2 (IN1): Logic input 1 for controlling the H-bridge state.
• Pin 3 (IN2): Logic input 2 for controlling the H-bridge state.
• Pin 4 (VCC): Connect to the motor power supply (4.5V to 44V).
• Pin 5 (OUT2): Connect to one terminal of the brushed DC motor.
• Pin 6 (RS): Current sensing pin; connect to ground through a sense resistor or directly to ground if sensing is not required.
• Pin 7 (OUT1): Connect to the second terminal of the brushed DC motor.
• Pin 8 (VCC): Secondary power supply pin (internally connected to Pin 4).

Datasheet Reference:

• Download Toshiba TB67H450 DC Motor Driver Datasheet

Commonly Used in:

• Smart Home Appliances: Powering motors in robotic vacuum cleaners, electronic locks, and motorized blinds.
• Industrial Actuators: Driving linear actuators and small conveyors in automated assembly lines.
• Office Automation: Managing paper feed motors in printers and high-speed scanners.

Applications:

• Battery Operated Tools: Controlling the high-torque output of cordless drills and screwdrivers.
• Educational Robotics: Serving as the primary driver for wheel motors in competition-grade mobile robots.
• Medical Devices: Precision control for infusion pumps and automated laboratory equipment.

Equivalent Models:

• DRV8871 (Texas Instruments): A 3.6A brushed DC motor driver with integrated current sensing.
• MAX14870 (Maxim Integrated): A compact H-bridge driver capable of handling up to 36V.
• A4950 (Allegro Microsystems): A functional equivalent often used in similar high-current PWM applications.

Package Includes:

• 1 x TB67H450 2CH 50V 3.5A DC Brushed Motor Driver IC SOP-8