TDA8542AT/N1,512

Overview

The TDA8542AT is a two-channel audio power amplifier delivering 2 × 1.5 W output power to an 8 Ω load at a 6 V supply with THD = 10%. It features Bridge-Tied Load (BTL) amplifiers with complementary PNP-NPN output stages and standby/mute logic in a 20-pin SO package. The supply voltage range is 2.2 V to 18 V, with typical quiescent current of 15 mA and standby current of 10 μA. Closed-loop voltage gain is adjustable from 6 dB to 30 dB via external resistors. Supply voltage ripple rejection is typically 50 dB.

Feature Summary

• Bridge-Tied Load architecture with complementary PNP-NPN output stage for efficient power delivery
• Integrated standby and mute control logic compatible with CMOS levels
• Comprehensive protection against short circuits to ground, VCC, and across the load
• Internal thermal shutdown mechanism prevents damage during overheating

Applications

• Portable consumer products
• Personal computers
• Motor-driver applications such as servo systems

Procurement Notes

Verify the specific ordering suffix N1,512 against manufacturer documentation to confirm package type and environmental compliance status. Ensure the component meets RoHS directives if required by the application. Confirm that the 20-lead SO package dimensions align with the PCB footprint design. Check for any end-of-life notifications or obsolescence warnings associated with this part number before finalizing procurement plans.

Selection Notes

Select this amplifier when a dual-channel BTL configuration is required for low-voltage audio applications. The device supports flexible gain settings through external feedback resistors, allowing customization for various input signal levels. Consider the thermal resistance characteristics and PCB copper area requirements to ensure adequate heat dissipation under maximum operating conditions. Verify that the supply voltage remains within the specified 2.2 V to 18 V range for reliable operation.

Part Context

The TDA8542AT belongs to the Philips/NXP audio amplifier family, designed for compact audio solutions. It serves as a bridge-tied load amplifier suitable for battery-powered devices where efficiency and minimal external components are critical. The device integrates logic controls for power management, reducing system complexity compared to discrete amplifier designs.

Replacement Considerations

Consult official replacement guides for direct substitutes. No confirmed public substitute part numbers are available in the provided source material.