Stable LDOs use small-output caps

Based on Rohm’s Nano Cap ultra-stable control technology, the BD9xxN5 series of LDO regulator ICs delivers 500 mA of output current. The series is intended for 12-V and 24-V primary power supply applications in automotive, industrial, and communication systems.

The BD9xxN5 series builds on the earlier BD9xxN1 series, increasing the output current from 150 mA to 500 mA while maintaining stability with small-output capacitors. The ICs provide low output voltage ripple (~250 mV) for load current changes from 1 mA to 500 mA within 1 µs. Using a typical output capacitance of 470 nF, they enable compact designs and flexible component selection.

All six new variants in the BD9xxN5 series are AEC-Q100 qualified and operate over a temperature range of –40°C to +125°C. Each device provides a single output of 3.3 V, 5 V, or an adjustable voltage from 1 V to 18 V, accurate to within ±2.0%. The absolute maximum input voltage rating is 45 V.

The BD9xxN5 LDO regulators are available now from Rohm’s authorized distributors. Datasheets for each variant can be accessed here.

Rohm Semiconductor 

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