General description
The SA58672 is a mono, filter-free class-D audio amplifier which is available in a 9 bump WLCSP (Wafer Level Chip-Size Package) and 10-terminal HVSON packages.
The SA58672 features shutdown control. Improved immunity to noise and RF rectification is increased by high PSRR and differential circuit topology. Fast start-up time and very small WLCSP package makes it an ideal choice for both cellular handsets and PDAs.
The SA58672 delivers 1.7 W at 5 V and 800 mW at 3.6 V into 8 Ω. It delivers 3.0 W at 5 V and 1.6 W at 3.6 V into 4 Ω. The maximum power efficiency is excellent at 90 % into 8 Ω and 84 % to 88 % into 4 Ω. The SA58672 provides thermal and short-circuit shutdown protection.

Features
■ Output power
   ◆ 3.0 W into 4 Ω at 5 V
   ◆ 1.6 W into 4 Ω at 3.6 V
   ◆ 1.7 W into 8 Ω at 5 V
   ◆ 800 mW into 8 Ω at 3.6 V
■ Power supply range: 2.0 V to 5.5 V
■ Shutdown control
■ High SVRR: −77 dB at 217 Hz
■ Fast start-up time: 7.0 ms
■ Low supply current
■ Low shutdown current
■ Short-circuit and thermal protection
■ Space savings with 1.66 mm × 1.71 mm × 0.6 mm 9 bump WLCSP package
■ Low junction to ambient thermal resistance of 100 K/W with adequate heat sinking of
   WLCSP
■ Enhanced power dissipation with 3.0 mm × 3.0 mm × 0.85 mm HVSON10 package

Applications
■ Wireless and cellular handsets and PDAs
■ Portable DVD player
■ USB speakers
■ Notebook PC
■ Portable radio and gaming
■ Educational toys