TA8428FG(O,EL)

Overview

The TA8428FG(O,EL) is a dual H-bridge motor driver integrated circuit manufactured by Toshiba Semiconductor and Storage. It is designed for controlling small to medium power brushed DC motors in embedded systems. The device integrates level shifting, dead-time control, over-current protection, thermal shutdown, and under-voltage lockout (UVLO). It supports TTL/CMOS logic inputs compatible with 2.0V to 5.5V interfaces. The power stage utilizes N-channel MOSFETs with an internal charge pump to ensure high-side gate drive voltage. Key electrical parameters include a maximum continuous output current of 2.0A per channel at 25°C ambient temperature and a peak current capability of 3.5A for 10ms pulses. The operating supply voltage range extends from 6.5V to 16.5V.

Feature Summary

• Dual independent H-bridge architecture for precise bidirectional motor control
• Integrated hardware dead-time generation to prevent cross-conduction shorts
• Built-in fault protection mechanisms including over-current detection and thermal shutdown
• Internal charge pump ensures reliable high-side MOSFET switching across the supply voltage range

Applications

• Brushed DC motor control in mobile robot chassis platforms
• Actuator drivers for smart door locks and industrial valve controllers
• Embedded systems based on ARM Cortex-M microcontrollers requiring simplified peripheral circuits

Procurement Notes

Verify the specific suffix codes against the manufacturer's official datasheet to confirm pin compatibility and functional variations. Ensure the selected package variant matches the target PCB footprint requirements. Confirm that the supply voltage and current ratings align with the specific motor load characteristics before finalizing procurement decisions.

Selection Notes

Select this component when a compact solution for dual brushed DC motor control is required without external discrete MOSFETs. It is suitable for applications where resource-constrained MCUs need direct GPIO connection via integrated level shifting. Consider the thermal performance constraints given the 2.0A continuous rating and the necessity for adequate heat dissipation on the PCB.

Part Context

This part belongs to Toshiba's dedicated motor driver series, optimized for industrial and consumer automation. It addresses the complexity of traditional discrete H-bridge designs by integrating control logic and power stages. The design focuses on reducing board space and minimizing timing-related failure risks associated with external driver ICs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative dual H-bridge drivers by comparing pin configurations, voltage ranges, and current capabilities against the original TA8428 specifications.