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TPA311D

TPA311D Class AB Audio Amp, 700 mW Mono, 8-SOIC

MPNTPA311D
End of Life

Texas Instruments TPA311D, Class AB mono audio amplifier, 700 mW output into 8 Ω, 2.5 V to 5.5 V supply, 8-SOIC package, -40°C to 85°C operating temperature.

$1.49Ref. price · indicative, final on quote
Texas Instruments TPA311D datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPA311D specifications
ParameterValue
TypeClass AB
Output type1-Channel (Mono)
MountingSurface Mount
Supply voltage2.5V ~ 5.5V
Max output power x channels @ load700mW x 1 @ 8Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FeaturesDepop, Short-Circuit and Thermal Protection, Shutdown
Case8-SOIC (0.154\", 3.90mm Width)

Product details

The Texas Instruments TPA311D is a Class AB mono audio amplifier delivering 700 mW into an 8 Ω load from a single supply between 2.5 V and 5.5 V. Typical applications include portable speakers, headphone amplifiers, intercoms, and line-driver stages in battery-powered or low-voltage equipment where a clean linear output is preferred over a Class D switching stage.

The 8-SOIC package (0.154" body width, 3.90 mm) is a standard surface-mount footprint. It reworks cleanly under hot air — low thermal mass, no hidden pads.

Frequently asked questions

What is the closest pin-compatible alternative to TPA311D?

The TPA311D is a standalone Class AB mono amplifier. The TPA3110 is a related device but differs in output power and package; verify pin compatibility against the datasheet before substituting.

What is TPA311D's listed type (Class AB) on this component line?

The TPA311D is a Class AB amplifier. This linear topology gives low crossover distortion at the cost of lower efficiency compared to Class D.

What is the price of TPA311D in bulk?

Bulk pricing is confirmed at quote time against an RFQ. Submit a request for current pricing and lead time.