TPA2006D1

` Maximum Battery Life and Minimum Heat
Efficiency With an 8-W Speaker:
` 88% at 400 mW
` 80% at 100 mW
2.8-mA Quiescent Current
0.5-mA Shutdown Current
` Shutdown Pin has 1.8-V Compatible Thresholds
` Only Three External Components
` Optimized PWM Output Stage Eliminates LC Output Filter
` Internally Generated 250-kHz Switching Frequency Eliminates Capacitor and Resistor
` 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
` Space Saving 3 mm x 3 mm QFN Package (DRB)

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond thos indicated under ecommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability

The TPA2006D1 is a 1.45-W high efficiency filter-free class-D audio power amplifier in a 3 mm ´ 3 mm QFN package that requires only three external components. The SHUTDOWN pin is fully compatible with 1.8-V logic GPIO, such as are used on low power cellular chipsets.

Features like 88% efficiency, 75-dB PSRR, improved RF-rectification immunity, and very small total PCB footprint make the TPA2006D1 ideal for cellular handsets. A fast start-up time of 1 ms with minimal pop makes it ideal for PDA applications.

In cellular handsets, the earpiece, speaker phone,and melody ringer can each be driven by the TPA2006D1. It allows independent gain while summing signals from separate sources,and has a low 36 mV noise floor, A-weighted.