TDA7053AT/N2,112

Overview

The TDA7053AT/N2,112 is a stereo BTL audio output amplifier manufactured by NXP USA Inc. It features integrated DC volume control stages and operates within a supply voltage range of 4.5V to 18V. The device delivers an output power of 0.55W per channel into a 16-ohm load at 6V supply. It utilizes a 16-pin SO plastic small outline package (SOT162-1). Key electrical characteristics include a typical total quiescent current of 25mA and a fixed voltage gain of 40.5dB. The component supports an operating ambient temperature from -40°C to +85°C.

Feature Summary

• Integrated DC volume control stages eliminate the need for external coupling capacitors while maintaining low offset voltage.
• Built-in Missing Current Limiter (MCL) protection circuit activates when output current differences exceed specified thresholds.
• Short-circuit proof design protects against faults to ground, supply voltage, and across the load.
• Thermal protection reduces gain if junction temperature exceeds 150°C to prevent damage.

Applications

• TV and monitor audio output stages
• Battery-fed portable recorders
• Portable radio receivers
• Headphone applications with single-ended loads

Procurement Notes

Verify component authenticity through official NXP channels or authorized distributors. Confirm the specific ordering suffix matches the required package variant. Check for RoHS compliance status as indicated in the product specification. Ensure storage conditions adhere to moisture sensitivity level requirements before soldering.

Selection Notes

Select this amplifier for applications requiring stereo BTL output with direct DC volume control integration. Consider the 16-SO package for surface mount assembly constraints. Evaluate thermal resistance values for heat dissipation planning in enclosed spaces. Verify that the supply voltage remains within the 4.5V to 18V operational limits for stable performance.

Part Context

This component belongs to the TDA7053A family of stereo BTL audio amplifiers. The 'T' designation indicates the SO16 package version, distinct from the DIP16 variant. It shares core functional specifications with other members of the series but differs in physical footprint and thermal characteristics suitable for different PCB layouts.

Replacement Considerations

Official substitute part numbers are not explicitly confirmed in the provided documentation. Consult NXP technical support for validated cross-references. Ensure any replacement maintains identical pinout compatibility and electrical parameters such as supply voltage range and output power capabilities.

FAQ

How does the MCL protection circuit function?

The Missing Current Limiter activates when the current difference between the output terminals of each amplifier exceeds 100 mA, typically at 300 mA, protecting the device during fault conditions.

What happens when the DC volume control voltage falls below 0.4 V?

When the DC volume control voltage drops below 0.4 V, the device switches to mute mode, reducing the output voltage to approximately 30-40 μV.