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TAS5421-Q1

ACTIVE

Automotive, 22W, 4.5 to 18V, analog-input mono Class-D audio amplifier

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Data sheet

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TAS5441-Q1 ACTIVE Automotive, 22W, 4.5 to 18V analog-input mono Class-D audio amplifier TAS5441-Q1 is our newest version of this device and enables non-blocking I2C in STANDBY mode.

TAS5421-Q1

ACTIVE
Data sheet Order now

Product details

Output power (W) 22 Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Features thermal pad down Audio input type Analog Input Control interface I2C THD + N at 1 kHz (%) 0.05 Switching frequency (max) (Hz) 500000 Output noise voltage (µV) 65 Rating Automotive Operating temperature range (°C) -40 to 125
Output power (W) 22 Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Features thermal pad down Audio input type Analog Input Control interface I2C THD + N at 1 kHz (%) 0.05 Switching frequency (max) (Hz) 500000 Output noise voltage (µV) 65 Rating Automotive Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • Mono BTL Digital Power Amplifier
  • 22-W Output Power at 10% THD+N into 4 Ω
  • 4.5-V to 18-V Operating Range
  • 85% Efficiency into 4 Ω
  • Differential Analog Input
  • Speaker Guard™ Speaker Protection with Adjustable Power Limiter
  • 75-dB Power-Supply Rejection Ratio (PSRR)
  • Load Diagnostic Functions:
    • Open and Shorted Output Load
    • Output-to-Power and Output-to-Ground Shorts
  • Protection and Monitoring Functions:
    • Short-Circuit Protection
    • 40-V Load Dump Protection per ISO-7637-2
    • Output DC Level Detection while Music is Playing
    • Overtemperature Protection
    • Overvoltage and Undervoltage Protection
  • Thermally Enhanced 16-Pin HTSSOP (PWP) Package with PowerPAD Package (Pad Down)
  • Designed for Automotive EMC Requirements
  • Qualified According to AEC-Q100 Grade 2
  • ISO9000: 2002 TS16949 Certified
  • –40°C to 125°C Ambient Temperature Range

All trademarks are the property of their respective owners.

  • Mono BTL Digital Power Amplifier
  • 22-W Output Power at 10% THD+N into 4 Ω
  • 4.5-V to 18-V Operating Range
  • 85% Efficiency into 4 Ω
  • Differential Analog Input
  • Speaker Guard™ Speaker Protection with Adjustable Power Limiter
  • 75-dB Power-Supply Rejection Ratio (PSRR)
  • Load Diagnostic Functions:
    • Open and Shorted Output Load
    • Output-to-Power and Output-to-Ground Shorts
  • Protection and Monitoring Functions:
    • Short-Circuit Protection
    • 40-V Load Dump Protection per ISO-7637-2
    • Output DC Level Detection while Music is Playing
    • Overtemperature Protection
    • Overvoltage and Undervoltage Protection
  • Thermally Enhanced 16-Pin HTSSOP (PWP) Package with PowerPAD Package (Pad Down)
  • Designed for Automotive EMC Requirements
  • Qualified According to AEC-Q100 Grade 2
  • ISO9000: 2002 TS16949 Certified
  • –40°C to 125°C Ambient Temperature Range

All trademarks are the property of their respective owners.

The TAS5421-Q1 is a mono digital audio amplifier, ideal for use in automotive emergency call (eCall), telematics, instrument cluster, and infotainment applications. The device provides up to 22 W into 4 Ω at less than 10% THD+N from a 14.4-Vdc automotive battery. The wide operating voltage range and excellent efficiency make the device ideal for start-stop support or running from a backup battery when required. The integrated load-dump protection reduces external voltage clamp cost and size, and the onboard load diagnostics report the status of the speaker through I2C.

For all available packages, see the orderable addendum at the end of the datasheet.

The TAS5421-Q1 is a mono digital audio amplifier, ideal for use in automotive emergency call (eCall), telematics, instrument cluster, and infotainment applications. The device provides up to 22 W into 4 Ω at less than 10% THD+N from a 14.4-Vdc automotive battery. The wide operating voltage range and excellent efficiency make the device ideal for start-stop support or running from a backup battery when required. The integrated load-dump protection reduces external voltage clamp cost and size, and the onboard load diagnostics report the status of the speaker through I2C.

For all available packages, see the orderable addendum at the end of the datasheet.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TAS5421-Q1 22-W Mono Automotive Digital-Audio Amplifier With Load Dump and I2C Diagnostics datasheet (Rev. D) PDF | HTML Sep 2, 2015
Application note TAS5421-Q1 and TAS5411-Q1 I2C Applications Note (Rev. B) PDF | HTML Jun 7, 2021
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun 27, 2019
Application note Short-to-Battery Protection Strategies for Class-D Amplifiers Nov 11, 2016
Technical article How does the eCall system work? PDF | HTML Apr 22, 2016
Technical article Instrument clusters: moving beyond chimes and dings (part 2) PDF | HTML Apr 17, 2015
Application note TAS5421-Q1 Class-D Output Snubber Design Mar 19, 2015
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 1, 2013
Application note Filter-Free Class-D Audio Amplifiers Nov 9, 2009
Application note Power Rating in Audio Amplifier (Rev. A) Mar 4, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TAS5421EVM — TAS5421EVM audio amplifier eval board for eCall, telematics, instrument cluster and infotainment

The TAS5421EVM showcases the latest TI analog input class D closed-loop mono amplifier. The EVM can be used as stand-alone platform with default I2C register settings. The EVM also works with USB2IIC-2 board and TAS5421-Q1 GUI for programming I2C register settings.

User guide: PDF
Supported products & hardware
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Application software & framework

PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.

PurePath Console’s (...)
Supported products & hardware
GUI for evaluation module (EVM)

SLOC307 — TAS5421-Q1 EVM GUI Setup

Supported products & hardware
Simulation model

TAS5421 IBIS Model

SLOM382.ZIP (19 KB) - IBIS model
Supported products & hardware
Simulation model

TAS5421 TINA-TI Spice Model

SLOM396.ZIP (32 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TAS5421 TINA-TI Transient Spice Model

SLOM395.ZIP (13 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TAS5421-Q1 Unencrypted Pspice Model Package (Rev. A)

SLOM385A.ZIP (93 KB) - PSpice model
Supported products & hardware
Reference design

PMP9768 — Automotive eCall Power Supply Reference Design with High Intermediate Voltage

This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
Supported products & hardware
Reference design

PMP9769 — Automotive eCall Power Supply Reference Design with Low Intermediate Voltage

This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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