LDO regulator for high quality audio devices

Nisshinbo Micro Devices has launched the MUSES100 series, a low-noise, low-dropout (LDO) voltage regulator designed specifically for high-quality audio applications.

Credit: Nisshinbo Micro Devices

The device, which includes several advanced features, is targeted for use in home audio, professional audio, and portable audio equipment.

The MUSES100 series is a CMOS-based LDO regulator that operates with an input voltage range from 2.5V to 5.5V, delivering an output voltage range from 1.2V to 5.0V and supporting an output current of up to 600mA. This series has been engineered to provide exceptional audio quality, featuring a ripple rejection ratio of 90 dB at 1 kHz & 10 kHz and 80 dB at 100 kHz.

In addition, an ultra-low output noise voltage of just 3.0 μVrms, makes it suitable for high-quality audio DACs and other audio equipment to ensure stable and noise-free audio output even under fluctuating power conditions.

The typical dropout voltage is 0.15V at 600mA, providing efficient voltage regulation with minimal power loss. A thermal shutdown, under-voltage lockout (UVLO), and overcurrent protection mechanisms are included to ensure reliable operation. Furthermore, it supports the use of film and aluminium electrolytic capacitors as these have better DC bias characteristics (less reduction in capacitance as the applied DC voltage increases).

The MUSES100 uses a compact DFN3030-8-QC package.