TPA301DGNR

Overview

The TPA301DGNR is a mono audio power amplifier in an 8-pin PowerPAD MSOP package. It operates on a single supply voltage ranging from 2.5 V to 5.5 V. The device delivers 350 mW of output power into an 8-ohm load at 5 V, and 250 mW at 3.3 V. Key electrical parameters include a unity-gain bandwidth of 1.4 MHz, a shutdown supply current of 0.15 µA, and a total harmonic distortion plus noise of 1.3% at rated power. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Bridge-tied load (BTL) configuration eliminates the need for external output coupling capacitors.
• Ultra-low quiescent current in shutdown mode enables extended battery life in portable devices.
• Integrated thermal and short-circuit protection safeguards the device during fault conditions.

Applications

• Low-voltage cellular communications equipment
• Portable handheld devices requiring internal speakers
• Battery-powered audio systems

Procurement Notes

Verify the specific ordering suffix 'R' corresponds to the taped and reeled packaging format as defined by Texas Instruments. Confirm that the DGN package designation matches the required PowerPAD MSOP footprint and thermal pad requirements for your PCB layout. Ensure compatibility with the specified operating temperature range and supply voltage constraints before finalizing procurement.

Selection Notes

Select this component for applications prioritizing low supply voltage operation and minimal external component count due to the BTL architecture. Consider the thermal dissipation characteristics inherent to Class-AB linear amplifiers when designing for high-output power scenarios. Evaluate the trade-off between board space savings offered by the MSOP package and the thermal management requirements of the application.

Part Context

The TPA301DGNR belongs to the TPA301 family of audio amplifiers developed specifically for low-voltage applications. This family includes variants such as the TPA301D and TPA301DR, which differ primarily in package type and shipping configuration. The TPA301 series is characterized by its efficiency in small form factors and suitability for voice-band frequency optimization.

Replacement Considerations

Direct substitutes within the same family include TPA301DGN and TPA301DR. Verify pinout compatibility and thermal performance equivalence when considering these alternatives.