TDA8566TH1/N2S,118

Overview

The TDA8566TH1/N2S,118 is a stereo BTL car radio power amplifier in a 24-lead HSOP plastic package. It delivers 2 × 25 W into 4 Ω or 2 × 40 W into 2 Ω loads at 1 kHz with 10% THD. The device features differential inputs, fixed gain of 26 dB, and open-collector diagnostic outputs for short-circuit and temperature pre-warning. Supply voltage ranges from 6 V to 18 V, with quiescent current typically at 115 mA.

Feature Summary

• Features differential input stages with high common mode rejection ratio
• Includes open-collector diagnostic outputs for clip detection and fault warnings
• Provides mode select switch functionality for operating, mute, and standby states
• Incorporates comprehensive protection against short circuits, thermal overload, and reverse polarity

Applications

• Car radio power amplification
• Stereo audio output stages
• Automotive infotainment systems

Procurement Notes

Verify the specific ordering suffix N2S,118 matches the required reel configuration and tape-and-reel specifications. Confirm that the 24-lead HSOP package variant aligns with the intended PCB footprint design. Ensure compatibility with existing I2C-controlled amplifier layouts if replacing TDA1566TH variants.

Selection Notes

Select this component when a 24-pin surface mount solution is required for automotive audio applications. It serves as a pin-compatible alternative to the 20-lead TDA8566TH for designs needing additional ground connections or thermal management via the heat tab. Consider the fixed 26 dB gain and BTL topology requirements during circuit design.

Part Context

This part belongs to the TDA8566 family of integrated class-B output amplifiers designed specifically for automotive environments. The TH1 variant distinguishes itself by offering a 24-lead small outline plastic package with a dedicated heat tab, enhancing thermal performance compared to the standard 20-lead version while maintaining functional equivalence.

Replacement Considerations

The TDA8566TH1 is pin compatible with the TDA1566TH for board layout purposes. Designers should verify that the additional pins on the 24-lead package are correctly handled in the schematic and PCB layout to ensure proper grounding and thermal dissipation.