ROHM with new 2.8W High Power Speaker Amp ICs for Advanced Instrument Clusters

ROHM with new 2.8W High Power Speaker Amp ICs for Advanced Instrument Clusters

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ROHM recently announced the AEC-Q100 qualified 2.8W output Class AB monaural speaker amplifiers the BD783xxEFJ-M series (BD78306EFJ-M, BD78310EFJ-M and BD78326EFJ-M) ideal for instrument clusters – used in vehicles equipped with autonomous driving and ADAS.

In recent years, technological innovations in the automotive field – such as autonomous driving and ADAS – require a greater variety of sounds, such as warning sound when departuring from the lane or for surrounding obstacles. As a result, even audio output systems in the instrument cluster are utilizing speaker amps to generate sound with an MCU, instead of relays that produce blinker sounds and electronic buzzers that emit warning sounds. However, until now it was difficult to ensure safe, stable sound output at loud volumes.

ROHM developed the BD783xxEFJ-M series for vehicle clusters – requiring various sound outputs at high volume, including warning sounds, turn signals, welcome tones and voice guidance. Also, adopting a new type of over current protection (OCP) circuit provides protection against output shorts (damage due to accidental terminal contact) to deliver high 2.8W output that was difficult to achieve in the past, making it possible to deliver high 2.8W output. In addition to over current protection, built-in thermal shutdown and under voltage lock out (UVLO) ensures high reliability protection against abnormal conditions.

Furthermore, satisfying the automotive reliability standard AEC-Q100 and having the capability of withstanding high temperature operation up to 105°C, enable stable voice output without compromising functionality even under severe conditions.

more information: www.rohm.com

About mixos

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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