Called PAM8106, the amplifier is aimed at wireless loudspeakers, LCD TVs, portable stereos, and game machines.
Operation is from 4.5 to 15V and efficiency of up to 92%, the last of which cuts heat production to the point that no heatsink is required, said the company.
15mA typical no-load quiescent current, plus the high efficiency, also suits it to battery operation. Maximum quiescent current is 30mA. Mute typically reduces consumption to 11mA, and the shut-down pin takes drain to 25µA max.
Both 8Ω and 4Ω speakers can be driven, with 2x 10W available with 8Ω speakers and a 12V supply.
Outputs are all-n-channel bridges, with boot-strapping from the output switching waveform providing upper gate-drive.
EMI suppression is through spread-spectrum modulation (SSM) of the output switching frequency. “Audio devices based on the PAM8106 can avoid the need for expensive filters on the audio outputs and instead use ferrite bead filters,” according to Diodes.
Clipping reduction is through ‘NCPL’ (non-clipping power limit) technology, “which automatically adjusts the gain to eliminate clipping at the output signal due to high-level input signals”, said Diodes.
How NCPL works is not obvious, and Electronics Weekly has requested clarification.
Protection is included against short-circuit, excessive temperature and rail under-voltage.
Packaging is QFN5x5-32L.