Summary
The AK7830 is a stereo audio power amplifier with a power booster designed to drive a 8ohm dynamic speaker.
AK7830 employs AKM Class-D amp architecture enabling stable audio output without the need of specific parts to drive a dynamic speaker.
The built-in power booster based on DCDC converter technology produces a power rail of 4.5V from low supply voltage of Li-ion 1cell, allowing to keep high sound volume and quality when voltage down.
AK7830 is available in a 24-pin QFN of 44mm body, and ideal for portable audio applications requiring serious saving of part space and power consumption.

Features

1. Stereo Class-D amplifier
   - 0.9W into 8ohm load (THD+N=10%, VDD=3.6V)
   - Output voltage 5V with built-in DCDC
   - Filter-free for output stage
   - Supply current with no-input: 4.6mA
   - Selectable gain: +9.5dB to +29.5dB, 2.5dB step
   - Short-circuit and thermal protection
   
2. Boost DCDC converte
   - Boost Li-ion 1cell voltage 3.0-4.5V up to 5V for Class-D output voltage
   
3. Input amplifier
   - Analogue signal input for differential or single-ended
   - Pop noise suppressor
   
4. Control registers
   - Accessible by I²C interface
   - Tuning gain
   - Selectable stereo mode or monaural mode
   
5. Operational voltage and temperature
   - Power supply: 3.0V to 4.5V
   - Power supply for digital interface: 1.7V to 3.1V
   - Operational temperature: -30deg to +85deg
   
6. Package 24-pin QFN (4.0mm x 4.0mm )