TDA7493

Overview

The TDA7493 is a dual-channel Class-D audio amplifier manufactured by STMicroelectronics. It operates on a single supply voltage ranging from 3V to 5.5V and delivers up to 3W of output power per channel into a 4-ohm load. The device features differential inputs, short-circuit protection, thermal protection, and a standby mode. It is housed in a 24-pin HTSSOP package with an exposed pad for surface-mount installation.

Feature Summary

• Class-D architecture for high efficiency
• Differential input configuration
• Integrated short-circuit and thermal protection
• Low-power standby mode

Applications

• Portable audio devices
• Small speakers
• Battery-powered audio systems

Procurement Notes

Verify the specific suffix (e.g., TR) for packaging type. Confirm current availability as some variants may be obsolete. Check datasheet for exact electrical limits and thermal requirements before integration.

Selection Notes

Select based on supply voltage range compatibility and required output power. Ensure the 24-HTSSOP package fits the PCB layout. Verify thermal management needs for continuous operation at maximum power levels.

Part Context

Part of the TDA749x series of audio amplifiers. Designed for low-voltage, high-efficiency audio applications. Commonly used in consumer electronics where battery life and space are constraints.

Replacement Considerations

Check for direct pin-to-pin replacements or functional equivalents with similar power ratings and package types. Verify compatibility with existing control signals and power supplies.