TDA2003AH

Overview

The TDA2003AH is a 10 W car radio audio amplifier IC from STMicroelectronics, housed in a horizontal Pentawatt package. It delivers up to 3.5 A output current with low harmonic distortion. Key electrical parameters include an operating supply voltage of 18 V and peak supply tolerance of 40 V. The device features a quiescent output voltage of 7.7 V max and drain current of 50 mA max. Thermal resistance junction-to-case is 3 °C/W max.

Feature Summary

• Integrated protection systems including thermal limiting, AC/DC short-circuit protection, load dump surge handling, polarity inversion immunity, and open ground defense.
• Designed for minimal external component count to facilitate ease of assembly and reduce overall system cost and space requirements.
• Capable of driving inductive loads such as coupling transformers for audio modulation via built-in protection diodes.

Applications

• Car radio audio amplification
• High-side driver applications requiring robust protection
• Audio circuits driving inductive loads

Procurement Notes

Verify the specific ordering suffix 'H' confirms the horizontal Pentawatt package orientation, distinct from the vertical variant. Confirm production status as this product may be subject to obsolescence notices. Ensure compatibility with existing heatsink mounting configurations due to the specific mechanical dimensions of the horizontal package style.

Selection Notes

Select this component for automotive audio designs requiring high output current and comprehensive internal protection against harsh electrical environments. Consider the horizontal Pentawatt package constraints for PCB layout and thermal management. Evaluate the need for LC filtering if supply voltage surges exceed standard limits.

Part Context

This part belongs to the TDA2003A family of audio amplifiers, offering improved performance over the TDA2002 while maintaining pin-to-pin compatibility. The 'H' suffix specifically denotes the horizontal Pentawatt package configuration, differentiating it mechanically from the vertical version intended for similar power distribution tasks.

Replacement Considerations

The TDA2003AV serves as a pin-compatible alternative within the same family but utilizes a vertical Pentawatt package. Verify mechanical fit and thermal interface requirements when substituting between horizontal and vertical package variants.

FAQ

How does the TDA2003AH handle accidental polarity inversion?

The device can withstand high current (up to 5 A) during polarity inversion without damage for a duration longer than the blow-out time of a quick 1 A fuse.

What protection is provided against open ground conditions?

Protection diodes are included internally to prevent damage if the ground connection is accidentally opened while the radio is in the ON condition.