TDA8547TS/N1,118

Overview

The TDA8547TS/N1,118 is a two-channel BTL audio power amplifier by NXP Semiconductors. It delivers 2 × 0.7 W to a 16 Ω load at 5 V supply, or 0.6 W to an 8 Ω load at 3.3 V. Single-channel operation yields up to 1.2 W. The device features output channel switching via the SELECT pin and standby/mute control via the MODE pin. Operating voltage ranges from 2.2 V to 18 V. Quiescent current is 15 mA for dual channels and 8 mA for single channel. Standby current is 10 μA. Total harmonic distortion is typically 0.15% at 0.4 W output.

Feature Summary

• Integrated output channel switching allows selection between Channel 1 and Channel 2 to reduce quiescent current consumption.
• Complementary PNP-NPN output stage provides low saturation voltage for efficient power delivery.
• Internal thermal shutdown protection safeguards against overheating during operation.
• Outputs are short-circuit safe to ground, VCC, and across the load.

Applications

• Telecommunication equipment
• Portable consumer products
• Personal computers
• Motor-driver (servo)

Procurement Notes

Verify the specific ordering suffix /N1,118 matches the required RoHS compliance and packaging variant. Confirm the SSOP20 package dimensions align with PCB footprint requirements. Check current product status as legacy specifications may indicate end-of-life or limited availability phases. Ensure design accounts for the specified thermal resistance values under intended operating conditions.

Selection Notes

Select this component for applications requiring dual-channel audio amplification with independent channel control. The low standby current makes it suitable for battery-powered devices where power conservation is critical. Verify that the required gain setting falls within the 6 dB to 30 dB range adjustable via external resistors. Consider the thermal dissipation capabilities when designing for high ambient temperatures or enclosed enclosures.

Part Context

This part belongs to the TDA854x series of audio amplifiers from NXP Semiconductors. It shares functional similarities with the TDA8542TS but offers specific channel switching capabilities. The device is designed for low-voltage consumer electronics applications. It utilizes a plastic shrink small outline package with 20 leads.

Replacement Considerations

TDA8542TS