ROHM regulators feature a compact size and 300mA output current.
Developed for secondary power supply use. Compatible with 1.8V power supply systems.

ROHM has developed a series of compact LDO regulators to address the growing demand for smaller power ICs and higher currents due to the increasing performance of sensors and radars used in ADAS.

ROHM Co., Ltd. announced on the 30th that it has developed the BUxxJA3DG-C series of LDO regulator ICs for automotive applications where miniaturization and high performance are being promoted, such as ADAS sensors and radars.

An LDO (Low Drop Out) regulator is a linear regulator that operates even at low input and output voltage differences. Compared to switching regulators, it has the characteristics of a simple circuit configuration and less noise.

The new product is an LDO regulator developed for secondary power supply in automotive applications, satisfying basic requirements such as small size and standard output voltage lineup.

With a compact size of 2.9 mm × 2.8 mm, it supports output currents up to 300 mA and covers an input voltage range from the lower limit of 1.7 V, which is uncommon for LDO series of the same purpose, so it can also be used in 1.8 V power supply systems.

In addition, among LDO regulators with low output noise, it reduces noise by approximately 40% compared to general products to 55µVrms (compared to products with an output voltage of 3.3V), making it suitable for applications requiring cleaner power, contributing to miniaturization and higher performance of ADAS sensors and radars.

The new product will begin mass production in August 2022 with a monthly production capacity of 60,000 units (sample price: 150 yen/unit, excluding tax), and can also be purchased from online parts distribution sites such as Chip 1 Stop and CoreStaff.

Finally, a ROHM official said, "Going forward, ROHM will continue to develop power ICs that contribute to lower power consumption and miniaturization in automotive applications, thereby contributing to the evolution of automobiles."