AnalogicTech’s First Class D Audio Amplifier Extends Battery Life in Portable Applications

AnalogicTech’s First Class D Audio Amplifier Extends Battery Life in Portable Applications

Extremely Low Standby, Quiescent Current, 2.1V Operation Save Power

Santa Clara, CA – April 29, 2009 – Advanced Analogic Technologies Incorporated (AnalogicTech) (Nasdaq: AATI), a developer of power management integrated circuits, announced today its first Class D audio amplifier. Building on the company’s extensive experience building power management ICs for portable applications, the AAT5101, 2.5W Class D audio amplifier delivers dramatic power savings by combining low voltage operation with low quiescent current and standby current an order of magnitude below competitive devices.

“While the Lithium-ion batteries currently used in most portable systems today shutdown at 2.5V, a new generation of batteries coming onto the market are designed to operate at much lower voltages,” says CJ Zhang, product line vice president. “By supporting operation down to 2.1V and offering very low quiescent and standby current, the AAT5101 offers designers of cell phones, notebooks, GPS and navigation devices an opportunity to significantly reduce power requirements and extend battery life.”

Reduced Operating Voltage

This new mono class D audio power amplifier operates across a wide 2.1V to 5.5V supply voltage making it ideal for systems using next generation low voltage Li-ion/polymer batteries. To further extend battery life, the audio amplifier delivers up to 92 percent efficiency and offers a very low 0.06 µA shutdown current and 1.35 mA quiescent current.

The AAT5101 outputs 1.35W with an 8? load and THD+N

The new audio amplifier also features integrated thermal and short circuit protection circuitry with self-recovery to protect the device from damage during over current conditions. Proprietary circuitry effectively suppresses pop and click noise.

Price and Availability

The AAT5101 is qualified across the -40 C to +85 C temperature range. The new audio amplifier is available in compact 9-pin wafer-level chip scale packaging (WLCSP) and sells for $0.28 in 1K quantities.

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