TDA8566Q/N2C,112

Overview

The TDA8566Q/N2C,112 is a Class-B stereo audio power amplifier designed for automotive radio applications. It features two amplifiers in a Bridge-Tied Load (BTL) configuration housed in a 17-pin DBS17P plastic DIL-bent-SIL package. The device delivers 2 × 40 W into a 2 Ω load or 2 × 25 W into a 4 Ω load at THD = 10%. Operating supply voltage ranges from 6 V to 18 V with a typical nominal value of 14.4 V. It includes differential inputs, diagnostic outputs for short-circuit and temperature warnings, and clip detection.

Feature Summary

• Features differential input stages providing high common mode rejection ratio and robust signal handling capabilities.
• Includes open-collector diagnostic outputs for monitoring short-circuit conditions, thermal pre-warnings, and output clipping events.
• Supports multiple operating modes including standby, mute, and normal operation via a dedicated mode select switch.
• Incorporates comprehensive protection mechanisms such as load dump protection, reverse polarity safety, and thermal shutdown.

Applications

• Car radio power amplification
• Automotive audio systems requiring BTL configuration
• Audio circuits needing integrated diagnostic feedback

Procurement Notes

Verify the specific ordering suffix and package variant against current NXP documentation, as component status may have changed. Confirm that the DBS17P through-hole package aligns with your PCB footprint requirements. Check for any updated environmental compliance declarations or lead-free specifications relevant to your manufacturing process before finalizing procurement.

Selection Notes

Select this component when a high-power Class-B amplifier with built-in diagnostics is required for automotive environments. Ensure the design accommodates the 17-pin bent-SIL package dimensions and provides adequate heatsinking given the thermal resistance characteristics. Verify that the fixed gain of 26 dB matches the system's input signal levels and that the differential input interface is compatible with the source electronics.

Part Context

This part belongs to the TDA8566 family of integrated class-B output amplifiers developed by NXP Semiconductors. The family includes variants like the TDA8566TH and TDA8566TH1, which utilize small outline plastic packages. The TDA8566Q specifically utilizes a 17-lead DIL-bent-SIL package, distinguishing it from the surface-mount options while maintaining identical functional core specifications for BTL car radio applications.

Replacement Considerations

The TDA8566TH1 is pin-compatible with the I2C-controlled TDA1566TH for board layout purposes, though functionality differs. Direct replacements within the same package type should be verified against the latest NXP product selection guide for availability and exact parameter matching.