ABLIC, a group company of MinebeaMitsumi, recently launched sales of the S-19230/1 Series, an automotive high-withstand voltage regulator IC that achieves one of the industry’s lowest operating current.
Recently, the power consumption of automotive electronic components such as various ECUs and infotainment systems has been steadily growing. As a countermeasure, there’s a growing trend to increase the voltage of automotive auxiliary batteries from the conventional 12V to 48V. Auxiliary batteries supply power to electronic components via wire harnesses. By quadrupling the voltage to supply the same power, the current can be reduced to one-quarter. This allows for the use of thinner wire harnesses, contributing to lighter vehicle designs and improved fuel or electric power efficiency.
The newly launched S-19230/1 Series supports 48V, 24V, and 12V auxiliary batteries, thanks to its high input voltage tolerance of up to 80V. It also achieves one of the lowest operating currents of 2.0µA, which is critical for supplying power to constantly operating sensors and CAN/LIN transceivers, helping to reduce the system’s standby current.
In addition, this product is the first ABLIC voltage regulator to integrate an open-loop protection circuit. The protection circuit suppresses the rise in output voltage to a certain level if the wiring between the external resistor and the IC—used for setting the output voltage—is broken (open fault). This protection circuit eliminates the need for conventional external components used for overvoltage protection, thereby contributing to cost reduction, space saving, and enhanced safety.
