TDA8551T/N1,118

Overview

The TDA8551T/N1,118 is a single-channel 1 W Bridge-Tied Load (BTL) audio power amplifier with integrated digital volume control. It delivers 1 W output to an 8 Ω load at THD = 10% using a 5 V supply. The device features a CMOS-compatible standby mode and operates within a supply voltage range of 2.7 V to 5.5 V. It includes thermal shutdown protection and short-circuit safety for ground, VP, and across the load.

Feature Summary

• Integrated digital volume control with 64 steps via UP/DOWN pulses
• Bridge-Tied Load (BTL) architecture with low saturation voltage
• CMOS-compatible standby and mute logic modes
• Built-in thermal shutdown and short-circuit protection

Applications

• Portable consumer products
• Personal computers
• Telephony systems

Procurement Notes

Verify component authenticity through authorized NXP channels or certified distributors. Confirm package integrity and pin alignment against SO-8 specifications. Review datasheet revisions for any updates to electrical characteristics or ordering information before finalizing procurement plans.

Selection Notes

Select this component for applications requiring a compact BTL amplifier with direct digital volume adjustment. Ensure the design accommodates the 2.7 V to 5.5 V supply range and utilizes the UP/DOWN pin interface for gain control. Verify thermal management requirements given the SO-8 package constraints.

Part Context

This part belongs to the TDA8551 family of audio amplifiers from NXP Semiconductors. It is specifically designed as a low-power solution for portable electronics. The 'T' suffix indicates the SO-8 plastic small outline package variant, distinguishing it from the DIP8 version.

Replacement Considerations

No officially confirmed substitute part numbers are documented in the provided source material.