Rohm’s compact major LDOs with extremely secure output voltage stability best for redundant energy provides

ROHM developed the provision of major LDO regulators : BD7xxL05G-C series (BD725L05G-C, BD730L05G-C, BD733L05G-C, and BD750L05G-C) that includes a rated enter voltage of 45V and 50mA output present optimized for redundant energy provides which can be more and more being utilized in automotive functions to enhance the reliability of car energy methods.

In recent times, the evolution of ADAS (Superior Driver Help System) and different security measures is requiring improved reliability for methods that offer energy to those functions. Consequently, redundant energy provides that may proceed to function core features (sub-MCUs) even within the occasion of a fundamental system malfunction are being more and more integrated in automotive energy provide system. And as redundant energy provide circuits are added to traditional methods, they need to essentially be space-saving and devour low energy. ROHM’s new merchandise can be utilized as major energy provides by profiting from unique energy provide expertise accrued over a few years.

The compact (2.9mm × 2.8mm) BD7xxL05G-C series meets key necessities for constructing redundant energy provides by offering excessive face up to voltage (Max.=45V) with low present consumption (6.0μA typ.).
On the identical time, leveraging ROHM’s strengths in analog expertise ensures secure output voltage even throughout steep battery voltage fluctuations. Not like customary merchandise with an overshoot of just about 1.3V that requires a big output capacitor to forestall the rated voltage of downstream units akin to sub-MCUs from being exceeded, ROHM LDOs restrict voltage overshoot to simply 0.1V, supporting a lot smaller output capacitors. Along with elimination of voltage clamping diode, this reduces board space by roughly 29% over common options whereas minimizing the variety of extra circuits wanted to configure redundant energy provides. Excessive resistance to disturbance noise can also be achieved (proven to get rid of output voltage fluctuation in any respect frequencies throughout ISO 11452-2 antenna irradiation testing), lowering the design load for noise countermeasures.

Going ahead, ROHM will proceed to contribute to enhancing automotive reliability by growing merchandise using its strengths in analog and different applied sciences.

Product Lineup

The brand new BD7xxL05G-C series meets fundamental necessities, akin to a compact dimension, assist for 125°C (Ambient Temperature) operation, qualification beneath the AEC-Q100 automotive reliability customary, and low present consumption demanded of automotive redundant energy provides. What’s extra, they can be utilized as major energy provides (45V rated enter voltage) regardless of their small dimension, with a lineup that makes it attainable to pick the best answer in keeping with the downstream gadget (i.e. sensor, MCU).
These LDOs are additionally extremely immune to disturbance noise, suppressing output voltage fluctuations to lower than 50mV (<±1%) over all the frequency band beneath ISO 11452-2 antenna irradiation testing, lowering the variety of man-hours required for noise countermeasures.

Utility Examples

Along with redundant energy provides, the space-saving low energy consumption design makes them best for functions that function when the engine is stopped.

SOURCE: Rohm