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Texas Instruments TPA721DGN — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

TPA721DGN Class AB Audio Amp, 700mW into 8Ω, 8-MSOP

MPNTPA721DGN
End of Life

Texas Instruments TPA721DGN, Class AB mono audio amplifier, 700mW into 8Ω, 2.5V-5.5V supply, -40°C to 85°C, 8-HVSSOP package, Tube.

$1.83Ref. price · indicative, final on quote
TPA721DGN datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

TPA721DGN Technical Specifications
ParameterValue
TypeClass AB
Output type1-Channel (Mono)
Mounting typeSurface Mount
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-TSSOP, 8-MSOP (0.118\", 3.00mm Width) Exposed Pad

Product details

What this part is — and where it fits

The Texas Instruments TPA721DGN is a Class AB mono audio amplifier rated for 700 mW into an 8 Ω load. It runs on a 2.5 V to 5.5 V supply. The package is an 8-pin HVSSOP with an exposed pad. Temperature range is -40°C to 85°C.

700 mW into 8 Ω — what that means for the BOM

700 mW into 8 Ω is a headphone-amp level, not a speaker-amp level. It'll drive a small speaker for beeps and voice prompts. The exposed pad on the HVSSOP needs a decent copper pour to keep the junction temperature under control if you're running it near full output continuously.

Protection features — shutdown, short-circuit, thermal

Built-in shutdown pin lets a microcontroller kill the amp when idle, saving battery draw. Short-circuit and thermal protection keep it from self-destructing if the output gets grounded or the board gets hot. Depop circuitry suppresses the turn-on thump that would otherwise hit the speaker.

Frequently asked questions

Where can I buy TPA721DGN?

Sourced and quoted to order through our independent distribution channel. Submit an RFQ for current availability and pricing — confirmed at quote time.

What is the output power of TPA721DGN at 8 ohms?

700 mW per channel into an 8 Ω load. That's the rated maximum output power for the mono channel.

Does TPA721DGN require a heatsink?

No external heatsink is needed if the PCB layout provides a solid thermal path through the exposed pad on the HVSSOP package. The pad is the primary heat-dissipation path.

What is the closest pin-compatible alternative to TPA721DGN?

The TPA721DGN is part of TI's TPA721 family. The TPA721DGN is the industrial-temperature, HVSSOP-packaged variant. The standard TPA721 (without the 'DGN' suffix) is in a different package (SOIC or MSOP without exposed pad). For a direct pin-compatible drop-in, stick with the TPA721DGN — the exposed pad footprint is specific to the DGN package code.