TDA8566TH/N2S,118

Overview

The TDA8566TH/N2S,118 is an integrated Class-B output amplifier designed for car radio applications. It features two amplifiers in a Bridge-Tied Load (BTL) configuration housed in a 20-lead HSOP20 plastic package (SOT418-3). The device delivers 2 × 25 W into a 4 Ω load or 2 × 40 W into a 2 Ω load at 14.4 V supply with 10% THD. It operates within a supply voltage range of 6 V to 18 V and includes differential inputs, fixed gain, and diagnostic outputs for short-circuit and temperature monitoring.

Feature Summary

• Integrated BTL stereo power amplifier with differential inputs and high common mode rejection ratio
• Diagnostic facility providing open-collector outputs for distortion clipping detection and short-circuit/temperature pre-warning
• Robust protection including load dump tolerance, reverse polarity safety, thermal shutdown, and short-circuit proof operation
• Mode select switch enabling operating, mute, and standby states with low quiescent current consumption

Applications

• Car radio power amplification
• Stereo audio systems requiring BTL configuration
• Automotive infotainment units

Procurement Notes

Verify the specific ordering suffix N2S,118 against the manufacturer's latest documentation to confirm material declaration, RoHS compliance status, and moisture sensitivity level. Ensure the procurement source provides valid traceability for this HSOP20 package variant. Cross-reference the part number with official NXP Semiconductors databases to confirm current production status and availability before finalizing orders.

Selection Notes

Select this component for automotive audio designs requiring high output power in a compact surface-mount package. The fixed 26 dB gain simplifies circuit design by reducing external component count. Consider the diagnostic pins for system health monitoring and the mode select pin for power management integration. Ensure the PCB layout accommodates the thermal requirements of the HSOP20 package for reliable operation under high load conditions.

Part Context

The TDA8566 series comprises integrated Class-B output amplifiers available in multiple packages, including the 20-lead HSOP20 (TDA8566TH), 24-lead HSOP24 (TDA8566TH1), and 17-pin DIL-bent-SIL (TDA8566Q). The TDA8566TH1 is pin-compatible with the I2C-controlled TDA1566TH. This family is specifically engineered for car radio applications, offering high output power capability and comprehensive protection features.

Replacement Considerations

The TDA8566TH1 is explicitly documented as pin-compatible with the TDA1566TH for board layout purposes. No other direct substitutes are confirmed in the provided datasheet.