TDA21471

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TDA21471

IC CONTROLLER

  • Manufacturer
  • Mfr. Part #TDA21471
  • Package QFN
  • Datasheet
  • In Stock3159

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Specifications

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ProductStatus Obsolete

Overview

Description

TDA21471 is a dual-channel audio power amplifier IC from Philips/NXP. It’s intended for consumer and automotive audio and integrates two power amplifier stages in one package, typically operating from a single supply in Class-AB. It includes protective features such as short-circuit and thermal protection, undervoltage protection, and often a mute/standby control to reduce pops on power-up. Applications include car radios, home stereo, soundbars, and multimedia speakers where a compact, cost-effective amplifier is desired. Benefits include reduced component count, simpler grounding, and improved protection and reliability. Note that exact specifications (output power, gain, bandwidth, supply range, pinout) vary by variant, so always consult the specific datasheet for TDA21471 to finalize the design and application circuitry.

Features

Here are the typical features of the TDA21471 (car audio, dual-channel power amplifier):
- 2-channel BTL (Bridge-Tied Load) audio power amplifier
- Automotive-friendly supply range (designed for 6–18 V)
- Suitable for 4 Ω and 8 Ω speaker loads
- Built-in protections: short-circuit protection, current limiting, thermal shutdown, undervoltage protection
- Pop-free mute and standby function
- Fault/diagnostic indication
- Differential input architecture with external gain setting
- High-quality audio performance: low distortion, good SNR
- Robust and automotive-grade package options
Note: exact output power, voltage ranges, and pin configurations are specified in the datasheet.

Package

TDA21471 is available in a Multiwatt package, specifically the Multiwatt-15 (through-hole) package.

Pinout

Typically a 16-pin package (DIP16/SO16). It is a dual audio power amplifier (class AB) IC with two amplifier channels and built-in protections (short-circuit/overload; often features mute/shutdown options). Note: exact pinout depends on the specific package variant; please specify the package or provide the datasheet for precise pin assignments.

Manufacturer

Manufacturer: NXP Semiconductors (formerly Philips Semiconductors).
What kind of company: A Dutch multinational technology company that designs, develops, and manufactures semiconductors and embedded electronics solutions for automotive, industrial, and consumer markets.

Application

Applications:
- Car audio systems (in-dash units, aftermarket amps)
- Home audio: stereo receivers, compact hi‑fi amplifiers
- Powered speakers and multimedia devices
- Small public-address systems
- DIY audio projects and demonstrations

Shipping

Shipping MethodsWe

offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

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