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TPA731DR The TPA731DR is a mono, analog input Class-AB audio power amplifier from Texas Instruments. It operates from a 2.5V to 5.5V supply and delivers up to 700mW of output power into an 8-ohm load.
Mfr Part #:

TPA731DR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The TPA731DR is a mono, analog input Class-AB audio power amplifier from Texas Instruments. It operates from a 2.5V to 5.5V supply and delivers up to 700mW of output power into an 8-ohm load.
✓ Total Stock: 2,628 pcs

TPA731DR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
2,500 pcs
On Request
2500 pcs On Request 1 On Request On Request 0727+ On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
128 pcs
On Request
128 pcs On Request 1 On Request On Request 05+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TPA731DR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Interface
Input Type
Mounting Type
Operating Temperature
Package / Case
SVHC Present
Supply Voltage
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TPA731DR Description

Short technical summary and product information.

The Texas Instruments TPA731DR is a bridge-tied load (BTL) audio power amplifier designed for low-voltage applications requiring internal speakers. It supports a wide power supply range from 2.5V to 5.5V, making it versatile for battery-powered devices.

 

This amplifier can deliver 700mW of continuous power into an 8-ohm load at 5V, and 250mW at 3.3V, with low total harmonic distortion plus noise (THD+N). Its operation is optimized for narrower band applications such as wireless communications. The BTL configuration eliminates the need for external output coupling capacitors, which is beneficial for small, battery-powered equipment.

 

The TPA731DR features a shutdown mode with an ultralow supply current of 1.5 nA, ideal for power-sensitive applications. It also includes thermal and short-circuit protection.

 

Available in surface-mount SOIC and PowerPAD MSOP packages, the TPA731DR offers compact solutions for space-constrained designs. The MSOP package, in particular, reduces board space by 50% and height by 40% compared to standard SOIC packages.

TPA731DR Quick Information

Product Type: Audio Amplifier
Series: TPA731
Canonical Name: TPA731DR Mono Audio Power Amplifier
Subcategory: General-Purpose Audio Amplifiers

TPA731DR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TPA731DR Features

  • Mono Class-AB audio power amplifier.
  • Wide 2.5V to 5.5V supply voltage.
  • 700mW output power into 8 Ohms.
  • Ultralow 1.5 nA shutdown current.
  • Surface-mount SOIC and MSOP packages.

TPA731DR Applications

  • Low-voltage audio systems.
  • Battery-powered devices.
  • Wireless communication devices.
  • Internal speaker applications.

TPA731DR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the TPA731DR?

2.5V to 5.5V.

What packages are available for the TPA731DR?

SOIC and MSOP surface-mount packages.

What is the operating temperature range of the TPA731DR?

-40°C to 85°C.

What output power can the TPA731DR deliver?

700mW typical into 8Ω at 5V, 250mW at 3.3V.

What is the shutdown current of the TPA731DR?

1.5nA typical.

What is the THD+N of the TPA731DR?

Less than 0.6% at 250mW, 0.5% typical at 700mW.

What input type does the TPA731DR support?

Analog input.

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