TDA8569Q/N1,112

Overview

The TDA8569Q is a four-channel Class-B audio power amplifier designed for bridge-tied load (BTL) configurations. It delivers 40 W per channel into a 2 Ω load with a fixed gain of 26 dB. The device operates on a supply voltage ranging from 6 V to 18 V and features comprehensive protection mechanisms including thermal shutdown, short-circuit safety to ground and supply, reverse polarity protection, and electrostatic discharge safeguards. A diagnostic output provides warnings for distortion, short circuits, and temperature pre-warning.

Feature Summary

• Integrated BTL quad amplifier architecture delivering high output power with minimal external components
• Diagnostic facility providing dynamic distortion detection, short-circuit status, and temperature pre-warning via an open-collector output
• Mode select switch enabling operating, mute, and standby states to control quiescent current and prevent switch-on plops
• Robust protection against load dump, reverse polarity, and various short-circuit conditions

Applications

• Car radio applications
• Automotive audio systems

Procurement Notes

Verify the component status as discontinued or obsolete before design finalization. Confirm that the DBS23P package dimensions align with the target PCB layout. Ensure the application circuit includes necessary input capacitors and adheres to the recommended mute timing sequence to prevent acoustic artifacts during power-up.

Selection Notes

Select this component for automotive environments requiring a single-chip solution for four speaker channels. It is suitable for designs needing fixed gain amplification without complex external feedback networks. Consider the thermal resistance characteristics and ensure adequate heat sinking or copper area on the PCB to manage power dissipation under maximum load conditions.

Part Context

The TDA8569Q belongs to the TDA856 series of integrated circuits manufactured by NXP USA Inc. It is pin-compatible with the TDA8567Q, allowing for potential direct replacements in existing designs where specific feature sets differ. The device utilizes a 23-lead Single-In-Line plastic power package optimized for through-hole mounting in automotive electronics.

Replacement Considerations

The datasheet explicitly states the device is pin compatible with the TDA8567Q.