TAS5421-Q1 - 22-W Mono Automotive Digital Audio Amplifier With Load Dump and I2C Diagnostics

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.

• 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.