ROHM’s New LDO Regulators with 500mA Output Current Achieving Stable Operation Even with Ultra-small Capacitors

ROHM has developed the “BD9xxN5 Series” of LDO regulator ICs with 500mA output current, featuring its proprietary ultra-stable control technology “Nano Cap™”. This series comprises 18 products designed for 12V/24V primary power supply applications used in automotive equipment, industrial equipment, and communication infrastructure.

In recent years, electronic devices have demanded higher density in smaller form factors at the same time. To meet this demand and achieve space savings and design flexibility, power supply ICs must be capable of stable operation even with small-capacity capacitors. However, achieving such performance with output capacitors of 1µF or less has been technically difficult.

To address this challenge, ROHM developed the “BD9xxN1 Series” LDO regulator (150mA output current) in 2022, incorporating its proprietary ultra-stable control technology, “Nano Cap™”. This innovation enables stable operation with output capacitors as small as 100nF, earning widespread adoption across numerous applications. The newly developed BD9xxN5 Series builds on the success of the BD9xxN1 Series by increasing the output current to 500mA (more info).

robenek@dps-az.cz