ROHM (headquartered in Kyoto, Japan), a world-renowned semiconductor manufacturer, has developed high-precision and ultra-high-precision products for various automotive and industrial equipment applications (including vehicle engine control units and FA equipment) that require voltage monitoring of electronic circuits to ensure safety. Low quiescent current reset IC*1 (voltage detector) "BD48HW0G-C".
In recent years, in the field of automobiles and industrial equipment, technological innovations around autonomous driving (automation) have been advancing rapidly, and the requirements for safety are also increasing. At the same time, in order to build a more secure system, it is required to take into account how to ensure safety (fail-safe and functional safety) in the event of a problem during the development of the device. Currently, ROHM has developed more than 1,000 reset ICs, which are indispensable products for voltage monitoring of electronic circuits and play an important role in ensuring equipment safety. With a rich product lineup, ROHM has achieved an annual shipment record of 250 million units (2021) in a wide range of applications in the low voltage range. In order to meet the increasing functional safety requirements of automotive and industrial equipment, ROHM has developed a new product that achieves an operating voltage of up to 40V, industry-leading voltage detection accuracy, and ultra-low quiescent current.
The new product adopts the high withstand voltage BiCDMOS process and integrates the analog design technology that ROHM is good at. It can achieve a working voltage of up to 40V and an industry-leading voltage detection accuracy of ±0.75%. It is a window type*1 reset IC. In addition, the detection voltage can be set flexibly, from the low voltage range around microcontrollers common to standard reset ICs to the high voltage range of automotive and industrial equipment power supplies, allowing for high-precision monitoring of voltage anomalies, thus contributing to Build systems with no waste (moderate voltage headroom) and high reliability in a wide range of applications.
In addition, by incorporating ROHM's own ultra-low quiescent current technology "Nano Energy™", the quiescent current is reduced to a very low 500nA (0.5µA, or 1/16 of ordinary products with the same function and accuracy), and customers adopt this product There is no need to worry about the increase in power consumption when the engine is stopped in battery-powered in-vehicle applications, so this product is also suitable for adding a voltage monitoring function to various power supply circuits for in-vehicle and industrial equipment that require functional safety*2.
