Document Summary

The SIA9177 is a digital input Class-D audio amplifier that integrates an adaptive high-efficiency DC-DC boost converter and IV detection.

The multi-level adaptive DC-DC converter can boost the output voltage up to 9V. The boosted output voltage can easily drive hands-free speakers from 4Ω to 8Ω for audio playback, or receiver speakers up to 32Ω for hands-free playback. Thanks to its adaptive boost converter, the SIA9177 saves over 10% of power in low-power output mode compared to conventional solutions on the market.

Integrated speaker voltage and current detection capabilities enable real-time monitoring of the speaker, helping external algorithms protect the speaker from damage.

The SIA9177 also provides over-temperature protection, over-current protection, over-voltage protection, and under-voltage protection to protect the chip.

The SIA9177 can be configured by an external processor via I2C. It can be set to one of four dedicated I2C addresses or a general-purpose I2C address, allowing multiple SIA9177 devices in the system to connect to the same I2C bus.

The chip is packaged in a 30-ball FOWLP package with a 0.4mm pitch. The product can operate over a wide temperature range of -40°C to +85°C.

Language: English

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