ROHM, a leading semiconductor manufacturer, has recently introduced its newest innovation in automotive technology – the development of 45V rated 500mA output primary LDO regulators. These cutting-edge devices, known as the BD9xxM5-C series, have been specifically engineered to provide power to crucial automotive electronic components such as ECUs, which directly rely on the vehicle’s battery.
As the automotive industry undergoes electrification, there has been a substantial increase in the demand for onboard power supply systems and functionalities. This has created a necessity for primary LDOs that can effectively reduce the battery voltage to power the MCUs and other components utilized in ECUs. However, the energy supplied by lead-acid batteries in vehicles often experiences abrupt voltage fluctuations, requiring primary LDOs to demonstrate exceptional line-transient response characteristics to maintain stable power delivery under these conditions.
Furthermore, the operation of ECUs and other downstream devices within vehicles can result in load current variations, further emphasizing the need for LDOs with outstanding load-transient response characteristics. ROHM acknowledged these challenges and responded with the development of a revolutionary solution to address these critical requirements.
The BD9xxM5-C series incorporates ROHM’s proprietary QuiCur™ high-speed load response technology, which delivers unparalleled response characteristics to load current fluctuations. One notable feat of this technology is its ability to maintain the output voltage within 100mV of the set voltage, even as the load fluctuates between 0 and 500mA in just 1 microsecond (Rise time/Fall time). Additionally, the devices boast low 9.5µA (typical) current consumption, leading to enhanced power efficiency in automotive applications.
To cater to various use cases, the BD9xxM5-C series will be available in four different packages, ranging from the compact HTSOP-J8 to the high heat dissipation TO252 (TO252-3/TO252-5) and HRP5 types. This flexibility enables users to select the most suitable package for their specific application needs.
Looking ahead, ROHM is committed to further enhancing the reliability and energy efficiency of automotive applications by leveraging its expertise in analog and other advanced technologies. As the automotive industry continues to evolve, the development of products such as the BD9xxM5-C series underscores ROHM’s dedication to innovation and excellence in serving the needs of the automotive sector.
In conclusion, the announcement of ROHM’s new primary LDO regulators marks a significant breakthrough in automotive technology, promising improved power delivery and energy efficiency for a wide range of vehicle electronic systems. With its advanced features and innovative design, the BD9xxM5-C series is poised to address the evolving demands of the automotive industry, further solidifying ROHM’s position as a key player in the semiconductor and automotive technology space.
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Rohm
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