TAS5421QPWPRQ1

• Class-D Output Stage Delivering Up to 22W Into a Single Mono Channel
• Single-Supply Operation from 4.5V to 18V, with a 14.4V Nominal Operating Voltage
• Voltage Gain of 36dB, with 75dB of Power Supply Rejection and 63dB of Common-Mode Rejection
• Draws 16mA of Operating Supply Current
• 16-Pin HTSSOP Surface-Mount Package with an Exposed Thermal Pad and Gold Contact Plating
• Specified from -40°C to 125°C, Lead Free and RoHS Compliant

The Texas Instruments TAS5421QPWPRQ1 is a single-channel mono Class-D audio power amplifier rated for 22W of output power. It runs from a single supply of 4.5V to 18V, with a 14.4V nominal operating voltage, and provides 36dB of voltage gain with 75dB of power supply rejection. The TAS5421QPWPRQ1 is supplied in a 16-pin HTSSOP package with an exposed thermal pad, on tape and reel, and is specified from -40°C to 125°C.

A Class-D amplifier switches its output devices rather than operating them linearly, so it runs cooler than a Class-AB part at the same output power and needs far less heatsinking, which is why it dominates space- and heat-constrained audio designs. A 22W mono channel running from a 14.4V nominal rail matches automotive head units and infotainment modules, and the same voltage window covers 12V industrial and public-address audio. The 125°C upper rating and thermally enhanced HTSSOP package suit enclosed dashboard and cabin mounting. Typical buyers are automotive tier-one suppliers and designers of aftermarket and commercial audio equipment.