TDA7052BT/N1,118

Overview

The TDA7052BT/N1,118 is a mono Bridge-Tied Load (BTL) audio amplifier manufactured by NXP Semiconductors. It integrates DC volume control and operates on a single supply voltage ranging from 4.5 V to 18 V. The device delivers an output power of 0.5 W into an 8 Ω load at 6 V supply. Key electrical characteristics include a maximum total voltage gain of 40.5 dB, a quiescent current of 9.2 mA typical, and a total harmonic distortion of 0.3% at 0.25 W output. It features thermal protection, short-circuit proof outputs, and ESD protection on all pins.

Feature Summary

• Integrated DC volume control stage eliminates the need for external coupling capacitors.
• Built-in thermal protection reduces gain if junction temperature exceeds 150 °C.
• Short-circuit proof design protects against ground, supply, and load faults.
• Optimized for low HF radiation and minimal switch-on/off clicks.

Applications

• TV and monitor internal audio amplification.
• Battery-fed portable recorders.
• Portable radio receivers.
• Headphone applications with single-ended configuration.

Procurement Notes

Verify component authenticity through authorized NXP channels. Confirm package integrity and pin alignment prior to assembly. Review material declarations for environmental compliance requirements specific to your region. Ensure storage conditions adhere to moisture sensitivity levels defined in the quality specification.

Selection Notes

Select this component for designs requiring a compact mono BTL solution with integrated volume adjustment. The SO8 package suits surface-mount applications with limited board space. Consider the 0.5 W output capability when matching speaker impedance. Verify that the supply voltage range aligns with the system's power budget.

Part Context

This part belongs to the TDA7052B family of mono BTL audio amplifiers. The BT suffix indicates the SO8 plastic small outline package variant, distinct from the DIP8 TDA7052B. Both variants share identical electrical specifications and functional blocks, differing only in physical mounting style and thermal resistance values.

Replacement Considerations

No official substitute part numbers are confirmed in the provided documentation. Designers should evaluate legacy equivalents based on pin compatibility and electrical parameters. Verify that any alternative component meets the same BTL architecture and DC volume control integration requirements.

FAQ

How does the DC volume control function?

The DC volume control stage is integrated into the input stage, allowing gain adjustment from 40.5 dB down to -33 dB via a control voltage. If the 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 output terminals exceeds 100 mA, protecting the device during short circuits or overload conditions, particularly useful for headphone applications.