TDA7473A

Full Half-Bridge (H Bridge) Drivers Overview

The TDA7473A is a quad power driver circuit in BTL configuration, designed for servo systems with a single supply. It features four built-in power bridges capable of 0.6A peak output current. The device operates within a wide supply voltage range of 6V to 15V. It integrates a 5V regulator for the power part and an adjustable regulator ranging from 2.0V to 3.6V at 200mA for logic circuits. Both regulators include short-circuit protection. The component is housed in a 28-SO package and supports surface mount installation.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates four independent BTL power bridges for driving actuators without external components
• Includes integrated voltage regulators with fold-back short-circuit protection for enhanced reliability
• Supports single-supply operation with wide input voltage tolerance

Full Half-Bridge (H Bridge) Drivers Applications

• Driving focus and tracking actuators in compact disc players
• Powering sledge motors in optical storage devices
• Controlling spindle motors in servo systems

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific ordering suffix matches the required package and temperature grade. Check for end-of-life status as this part may be discontinued. Ensure compatibility with existing PCB footprints and thermal management requirements before integration into new designs.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for applications requiring multiple BTL drivers in a compact form factor. It is suitable for systems needing integrated regulation to simplify power distribution. Consider the 28-SO package constraints for layout. Evaluate if the 0.6A per bridge current rating meets the load requirements. Verify that the single-supply architecture aligns with the system's power budget.

Full Half-Bridge (H Bridge) Drivers Part Context

The TDA7473A belongs to the TDA7473 family of quad BTL drivers. It is specifically optimized for audio and servo applications in consumer electronics. The device simplifies design by combining power switching and regulation in one IC. It targets high-volume manufacturing environments where component count reduction is critical.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult STMicroelectronics for direct replacements or pin-compatible alternatives.