The RB550VAM-30TR is a PMIC from ROHM, which stands for Power Management IC. It is specifically a voltage regulator IC that is able to provide up to +30V of adjustable output from a single +6V input. This IC includes a synchronous rectifier, built-in switching FET, and EMF protection for high-efficiency voltage conversion. It also offers high-speed response, low output noise, and high-speed fan control. On top of that, it is RoHS compliant, given its low-voltage status.