Description:

The TAS5431-Q1 is a mono Class‑D audio amplifier designed for automotive emergency call (eCall), telematics, instrumentation cluster, and infotainment applications. Powered from a 14.4VDC automotive battery, this device delivers up to 8W into a 4Ω load at THD+N ≤ 10%. With high operational voltage tolerance and excellent efficiency, it is ideal for systems requiring start‑stop support or backup battery operation. Integrated load‑dump protection reduces the cost and size of external voltage‑clamp circuits, while onboard load diagnostics report speaker status via I²C.

Features:

AEC‑Q100 qualified for automotive applications

Temperature Grade 1: –40°C to +125°C TA

Mono BTL digital power amplifier

8W output power into 4Ω at 10% THD+N

4.5V to 18V operating supply voltage range

83% efficiency into 4Ω load

Differential analog inputs

Speaker Guard™ speaker protection with adjustable power limiter

75dB power supply rejection ratio (PSRR)

Load diagnostic features:

Open and short output load detection

Output-to-supply and output-to-ground short detection

Protection and monitoring features:

Short‑circuit protection

40V load‑dump protection per ISO‑7637‑2

Output DC level detection during music playback

Thermal protection

Under‑voltage and over‑voltage protection

Thermally enhanced 16‑pin HTSSOP (PWP) package with PowerPAD™ (die‑down)

Designed to meet automotive EMC requirements

ISO9000:2002 TS16949 certified

40V load‑dump protection in standby mode

I²C non‑blocking in standby mode

Applications:

Automotive emergency call (eCall) amplifiers

Telematics systems

Instrument cluster systems

Infotainment audio