1FEATURES

2· Pin-to-Pin Compatibility with TPA2010D1

· 32 ms Start-up Time Eliminates CODEC

Click/Pop noise

· Maximum Battery Life and Minimum Heat

– Efficiency With an 8-Ω Speaker:

– 88% at 400 mW

– 2.8-mA Quiescent Current

– 0.5-mA Shutdown Current

· Only Three External Components

– Optimized PWM Output Stage Eliminates

LC Output Filter

– Improved PSRR (–75 dB) and Wide Supply

Voltage (2.5 V to 5.5 V) Eliminates Need for

a Voltage Regulator

– Fully Differential Design Reduces RF

Rectification and Eliminates Bypass

Capacitor

– Improved CMRR Eliminates Two Input

Coupling Capacitors

· Wafer Chip Scale Packaging (WCSP)

– NanoFree™ (YZF)

APPLICATIONS

· Ideal for Wireless or Cellular Handsets and

PDAs

DESCRIPTION

The TPA2031D1 is a 2.5-W high efficiency filter-free class-D audio power amplifier in a 1,45 mm × 1,45

mm wafer chip scale package (WCSP) that requires

only three external components.

Features like 88% efficiency, –75-dB PSRR,

improved RF-rectification immunity, and 8 mm2 total

PCB area make the TPA2031D1 class-D amp ideal

for cellular handsets. 32 ms start-up time allows the TPA2031D1 to share the same GPIO

enable/shutdown control as the CODEC without

passing through the CODEC turn-on pop.

In cellular handsets, the earpiece, speaker phone,

and melody ringer can each be driven by the

TPA2031D1. The TPA2031D1 allows independent

gain while summing signals from separate sources,

and has a low 36 mV noise floor, A-weighted.