TPA311DGNG4

Overview

The TPA311DGNG4 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 supports both bridge-tied load (BTL) and single-ended (SE) output configurations. In BTL mode, it delivers up to 700 mW into an 8-ohm load at 5 V. Key features include shutdown control with low standby current, integrated depop circuitry, and thermal protection.

Feature Summary

• Supports switching between bridge-tied load and single-ended modes via hardware control
• Includes integrated depop circuitry to minimize speaker noise during startup and shutdown
• Features shutdown mode for significant power reduction in battery-powered applications

Applications

• Low-voltage portable electronic devices
• Internal speaker amplification systems
• External earphone drive circuits

Procurement Notes

Verify the component matches the specific PowerPAD MSOP-8 package configuration. Confirm that the ordering suffix corresponds to the standard tube packaging rather than reel variants. Ensure the manufacturer designation aligns with Texas Instruments production standards for this legacy audio amplifier series.

Selection Notes

Select this amplifier for designs requiring flexible output topology without external coupling capacitors. It is suitable for applications needing efficient power delivery from low-voltage batteries. Consider the thermal performance of the PowerPAD package for high-power operation within the specified temperature range.

Part Context

This component belongs to the TPA311 family of Class-AB audio amplifiers designed for voice band frequencies. It is optimized for narrow-band applications such as cellular communications. The device integrates bias control and protection features to simplify system design in space-constrained environments.

Replacement Considerations

TPA311DGNR is a compatible variant available in taped and reeled packaging.