ROHM has dramatically increased the freedom of high-current power supply design.

ROHM announced on the 27th that it recently developed the 500mA compatible LDO regulator IC 'BD9xxN5 series'.

This product is aimed at 12V/24V system primary power supplies for automobiles, industrial equipment, and communication infrastructure, and features ROHM's proprietary stable control technology, 'Nano Cap™'.

This new product is a current expansion model of the existing 150mA class 'BD9xxN1 series', and increases the output current to 500mA, which is more than three times.

This has expanded the scope of application to applications requiring even greater current, such as automotive electronics where autonomous driving and electrification are accelerating, and high-performance industrial control devices.

What is particularly noteworthy is that stable operation is achieved even with ultra-small capacitance capacitors.

By applying Nano Cap™ technology, the output voltage fluctuation was suppressed to approximately 250 mV when the load current suddenly changes from 1 mA to 500 mA even when using a 470 nF output capacitor.

Stable operation is possible even in ultra-small MLCCs of 1μF or less and 0603M size, where stability was generally difficult to ensure.It contributes to miniaturization of circuits and substrates and increased freedom in component selection.

The BD9xxN5 series consists of a total of 18 products, and mass production began in October 2025 at a monthly production rate of 300,000 units.

It can be purchased through major online distribution channels such as Chip 1 Stop, DigiKey, and Mouser, and the high-precision SPICE simulation model 'ROHM Real Model' is also provided to increase verification efficiency during the design stage.

ROHM expects that this product will reduce the burden of power design in various fields, including automotive powertrain and body control modules, industrial PLCs and gateways, building automation systems, and home appliance control boards.

The company stated, “We will continue to expand our LDO lineup using Nano Cap™ technology to contribute to the high performance, miniaturization, and reliability of electronic devices.”