TDA8543T/N1,518

Overview

The TDA8543T/N1,518 is a single-channel audio power amplifier delivering up to 2.2 W output into an 8 Ω load at a 7.5 V supply. It utilizes a Bridge-Tied Load (BTL) architecture with a complementary PNP-NPN output stage and integrated standby/mute logic. The device operates within a supply voltage range of 2.2 V to 18 V and features low saturation voltage in the output stage. It includes comprehensive protection mechanisms against short circuits to ground, VCC, and across the load, as well as thermal shutdown. The total harmonic distortion is typically 0.15% at 0.5 W output.

Feature Summary

• Bridge-Tied Load (BTL) configuration with complementary PNP-NPN output stage for efficient power delivery
• Integrated standby and mute modes controlled by CMOS-compatible logic levels on the MODE pin
• Comprehensive protection including thermal shutdown and short-circuit safety to ground, VCC, and across the load
• High supply voltage ripple rejection capability to maintain performance under varying power conditions

Applications

• Portable consumer products
• Personal computers
• Telephony systems

Procurement Notes

Verify component authenticity through authorized NXP Semiconductors channels or certified distributors. Confirm that the specific ordering suffix matches the required package type and environmental compliance standards. Review the latest product specification document for any updates regarding manufacturing status or recommended operating conditions prior to final design integration.

Selection Notes

Select this amplifier for applications requiring a single-channel BTL solution with minimal external components. Ensure the load impedance and supply voltage align with the desired output power specifications. Consider the SO16 package for surface-mount designs where space efficiency is critical. Verify that the gain setting resistors are chosen to provide the necessary amplification within the specified input signal range.

Part Context

The TDA8543 series represents a family of audio power amplifiers designed for low-voltage consumer electronics. The TDA8543T variant specifically denotes the plastic small outline package version. This component belongs to NXP's portfolio of mixed-signal integrated circuits intended for high-performance audio applications in portable devices and personal computing hardware.

Replacement Considerations

Consult official NXP documentation for qualified substitute part numbers. Cross-reference pin configurations and electrical characteristics to ensure compatibility with existing circuit designs.