TDA7492PETR

Overview

The TDA7492PETR is a dual BTL Class-D audio amplifier manufactured by STMicroelectronics, housed in a 36-pin PowerSSO package with exposed pad down (EPD). It operates on a single supply voltage ranging from 7 V to 26 V. In stereo BTL configuration at VCC = 22 V and RL = 6 Ω, it delivers up to 41 W per channel at THD = 10% and 32 W at THD = 1%. Parallel BTL mono operation provides up to 90 W into a 3 Ω load at THD = 10%. The device features four selectable fixed gain settings: 20.8 dB, 26.8 dB, 30 dB, and 32.8 dB. Quiescent current is typically 40 mA, dropping to 1 μA in standby mode.

Feature Summary

• Supports multiple output configurations including stereo BTL and parallel BTL mono modes for flexible system design.
• Integrates differential inputs to minimize common-mode noise and improve signal integrity.
• Includes comprehensive protection mechanisms such as thermal overload, short-circuit detection, and power limiting functions.
• Offers low standby current consumption through dedicated Standby and Mute operating modes.

Applications

• Home audio systems
• Powered speakers
• Audio amplification modules

Procurement Notes

Verify the specific ordering suffix 'TR' indicates tape and reel packaging, distinct from the tube-packaged TDA7492PE. Confirm the component matches the EPD package variant rather than the EPU version found in other family members. Ensure application requirements align with the 7 V to 26 V supply range and verify that the selected gain setting meets the system's input sensitivity needs.

Selection Notes

Select this component when a high-efficiency dual-channel amplifier is required for home audio applications. The choice between stereo and parallel BTL modes depends on the target load impedance and desired total output power. Consider the exposed pad down package for PCB-based heat dissipation solutions. Verify that the internal oscillator frequency or external synchronization options suit the electromagnetic interference constraints of the final product.

Part Context

This part belongs to the TDA7492 series of Class-D audio amplifiers. While the base model TDA7492E utilizes an exposed pad up package for simpler heatsinking, the TDA7492PE variant uses an exposed pad down design to facilitate thermal management directly through the printed circuit board copper area. This distinction affects the mechanical mounting and thermal interface strategy during integration.

Replacement Considerations

TDA7492PE

FAQ

How are the gain settings configured?

The device offers four selectable fixed-gain settings (nominally 20.8 dB, 26.8 dB, 30 dB, and 32.8 dB) controlled via the GAIN pin using standard logic drivers.

What happens during thermal overload?

If the junction temperature exceeds 140 °C, the device enters mute mode. If it exceeds 150 °C, the power stage shuts down immediately and recovers automatically once the temperature drops below the threshold.