TDA7052B/N1,112

Overview

The TDA7052B is a mono Bridge-Tied Load (BTL) audio amplifier manufactured by NXP Semiconductors. It integrates DC volume control and requires few external components. The device operates on a single supply voltage ranging from 4.5 V to 18 V. At a supply voltage of 6 V with an 8-ohm load, it delivers 1 W of output power. Key electrical characteristics include a maximum total voltage gain of 40.5 dB and a total quiescent current of 13 mA at 6 V. The component is housed in an 8-lead plastic dual in-line package.

Feature Summary

• Integrated DC volume control stage eliminates the need for external coupling capacitors.
• Bridge-Tied Load (BTL) architecture reduces peak supply current and allows lower ripple requirements.
• Built-in thermal protection circuit reduces gain if junction temperature exceeds 150 °C.
• Short-circuit proof design protects against faults to ground, supply voltage, and across the load.

Applications

• TV and monitor internal audio amplification circuits.
• Battery-fed portable recorders requiring low power consumption.
• Portable radio systems utilizing single-supply operation.
• Headphone applications utilizing the Missing Current Limiter feature.

Procurement Notes

Verify the specific ordering suffix and package variant during acquisition. Confirm that the selected component matches the required lead frame material and environmental compliance standards for the intended manufacturing process. Ensure compatibility with existing PCB footprint dimensions and soldering profiles.

Selection Notes

Select this amplifier for designs requiring integrated volume adjustment without external coupling capacitors. The BTL configuration is suitable for maximizing output power within limited supply voltage constraints. Consider the thermal resistance characteristics when designing heat dissipation strategies for high-power operation scenarios.

Part Context

This component belongs to the TDA7052 family of mono BTL audio amplifiers. The TDA7052BT variant offers similar functionality but is packaged in a small outline format. Both variants share identical electrical specifications and functional blocks, differing primarily in physical housing dimensions and mounting methods.

Replacement Considerations

The TDA7052BT serves as the surface-mount equivalent to the through-hole TDA7052B. Verify pinout compatibility and thermal management requirements when substituting between DIP and SO packages.

FAQ

How does the DC volume control function?

The DC volume control stage is integrated into the input stage, allowing gain control from 40.5 dB down to -33 dB via a control voltage. If the control voltage falls below 0.4 V, the device enters mute mode.

What is the purpose of the Missing Current Limiter (MCL)?

The MCL circuit activates when the current difference between the output terminals exceeds 100 mA. This feature enables safe headphone applications in single-ended configurations by limiting peak output current.