Compact automotive grade LDO regulators

Two low dropout regulator families have been added to Rohm’s LDO portfolio. With its miniaturised package, the BUxxJA2MNVX-C series is said to be the smallest automotive-grade LDO regulator, whereas the BD7xxLx series provides quiescent current features.

There are multiple voltage and current options as well as packaging solutions to meet the exact application requirements, whether in automotive body, power train and infotainment, or advanced driver assistance systems. Both regulators are based on Rohm’s vertically integrated product system, along with its proprietary analogue design process and package technologies.

Devices in the BD7xxLx and the BD4xxMx have an input ranging up to 50V and operate in temperatures spanning from -40 to 125°C. The BD7xxLx family is composed of eight parts, with output voltage ranging from 3.3 to 5V, output current from 200 to 500mA and three standard package types.

The AEC-Q100 qualified BUxxJA2MNVX-C series provides automotive grade reliability in a 1mm2 package. Stand-by current consumption is 35µA, while load regulation responds to a 65mV load fluctuation. The regulators support smaller external capacitors as low as 0.22µF for further miniaturisation.