TDA8566Q/N2,112

Overview

The TDA8566Q/N2,112 is an integrated Class-B output amplifier designed for stereo BTL car radio applications. It delivers 2 × 40 W into a 2 Ω load or 2 × 25 W into a 4 Ω load at THD = 10%. The supply voltage range is 6 V to 18 V with a typical operating point of 14.4 V. Quiescent current is typically 115 mA, while standby current is approximately 0.1 μA. The device features differential inputs with a fixed closed-loop gain of 26 dB and offers high common mode rejection ratio.

Feature Summary

• Integrated Bridge-Tied Load (BTL) configuration with differential input stage
• Diagnostic outputs for short-circuit detection, temperature pre-warning, and clip indication
• Mode select switch supporting operating, mute, and standby states
• Built-in protections including reverse polarity safety, thermal shutdown, and electrostatic discharge protection

Applications

• Car radio power amplification
• Stereo audio systems requiring BTL topology
• Automotive audio processing units

Procurement Notes

Verify the specific package variant, as the TDA8566 family includes multiple packages such as HSOP20, HSOP24, and DBS17P. Confirm that the DBS17P package matches the required PCB footprint and lead length specifications. Check the latest product status on the manufacturer website, as availability may vary by region or distribution channel.

Selection Notes

Select this component when a high-power Class-B amplifier with diagnostic capabilities is required for automotive environments. Ensure the application supports the 26 dB fixed gain and differential input requirements. Verify that the thermal management strategy accommodates the junction-to-ambient thermal resistance in free air conditions.

Part Context

The TDA8566 series comprises integrated Class-B output amplifiers available in various packages. The TDA8566TH utilizes a 20-lead small outline plastic package, while the TDA8566TH1 uses a 24-lead version pin-compatible with the I2C-controlled TDA1566TH. The TDA8566Q specifically refers to the 17-pin DIL-bent-SIL package variant.

Replacement Considerations

TDA8566TH1 is pin compatible with TDA1566TH for board layout purposes.