TDA8547TS/N1,112

Overview

The TDA8547TS is a dual-channel Bridge-Tied Load (BTL) audio power amplifier manufactured by NXP Semiconductors. It delivers an output power of 2 × 0.7 W into a 16 Ω load at a 5 V supply, or 0.6 W into an 8 Ω load at 3.3 V. The device features complementary PNP-NPN output stages and includes standby/mute logic controlled via the MODE pin. A SELECT pin allows switching one channel to standby for loudspeaker selection or quiescent current reduction. When only one channel is active, maximum output power reaches 1.2 W. The IC operates within a supply voltage range of 2.2 V to 18 V and incorporates thermal shutdown and short-circuit protection.

Feature Summary

• Dual BTL amplifiers with selectable channel operation via the SELECT pin
• Low saturation voltage output stage for efficient power delivery
• Integrated thermal shutdown and short-circuit safe outputs
• CMOS compatible standby and mute control logic

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and tape/reel specifications. Confirm product status as the datasheet indicates potential supersession. Ensure design compliance with absolute maximum ratings regarding supply voltage and thermal dissipation limits before finalizing procurement.

Selection Notes

Select this component for applications requiring dual-channel audio amplification with independent channel control. The low quiescent current in standby mode makes it suitable for battery-powered devices. Verify that the required gain setting falls within the 6 dB to 30 dB range adjustable by external feedback resistors. Ensure the PCB layout supports the thermal requirements for the SSOP20 package.

Part Context

The TDA8547TS belongs to NXP's integrated circuits family designed for audio power amplification. It shares functional similarities with other BTL amplifiers in the series but is distinguished by its specific output channel switching capability. The device utilizes an SSOP20 plastic shrink small outline package, providing a compact solution for space-constrained electronic designs requiring dual-channel audio processing.

Replacement Considerations

Consult official substitution lists for verified equivalents. Cross-reference electrical parameters such as supply voltage range, output power capabilities, and package dimensions to ensure compatibility.