The new devices, the BU12JA3DG-C, BU15JA3DG-C, BU18JA3DG-C, BU25JA3DG-C, BU30JA3DG-C, and BU33JA3DG-C form the BUxxJA3DG-C series.
They have been designed for automotive applications such as sensors for ADAS (Advanced Driver Assistance Systems) which have become smaller and more powerful.
With safety requirements in the automotive sector having increased as technological innovations in accident prevention and autonomous driving continue to progress, sensors and cameras installed in ADAS are becoming increasingly sophisticated, necessitating power supply ICs that deliver larger currents in a smaller package size.
ROHM has already developed a range of compact, energy-saving solutions that utilise an extensive line-up of DC-DC converters and LDO regulators for a wide range of automotive applications, including ADAS and ECUs.
The new BUxxJA3DG-C series meets the basic requirements for LDOs used in the secondary power supplies of automotive systems (i.e. compact size, compatibility with standard output voltages).
On top of that, despite their small package size (2.9mm × 2.8mm), they are able to support output currents of up to 300mA while covering an input voltage range from 1.7V to 6V. Such low input supply voltage enables the use of the LDO in 1.8V power supply systems to provide low output voltages at a higher efficiency.
In addition, the output voltage noise is reduced to just 55µVrms which is about 40% lower than similar 3.3V low-noise LDO regulators. As a result, its series is able to provide a quieter power supply along with greater miniaturisation and performance in ADAS applications.
Application examples include: ADAS, sensors, cameras and radar, car infotainment systems including clusters and head-up displays (HUDs).
