ABLIC Inc., a group company of MinebeaMitsumi Inc., has launched sales of the S-19230/1 Series, an automotive high-withstand voltage regulator IC that achieves the industry’s lowest(*1) operating current.
Recently, the power consumption of automotive electronic components like various ECUs and infotainment systems has been steadily increasing. 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 enables 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 an industry-lowest operating current of 2.0µA (*1), which is crucial for supplying power to constantly operating sensors and CAN/LIN transceivers, helping to reduce the system’s standby current (*2).
Additionally, 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, contributing to cost reduction, space saving, and enhanced safety.
(*1) It boasts 66V operation as a voltage regulator IC. Based on our research as of September 2025.
(*2) Standby current: Current that flows even when the ignition is turned OFF
Major Features
1. Industry’s Lowest 2.0µA Current Consumption
ABLIC achieved an industry-lowest operating current consumption of 2.0µA. This significantly reduces the overall system standby current when powering constantly operating sensors, CAN/LIN transceivers, and other components.
2. 80V Input Voltage Tolerance
With a high input voltage tolerance of 80V, this product supports 48V auxiliary batteries. Additionally, when the output current is 10mA or less, it supports 24V and 12V auxiliary batteries due to a minimum operating voltage of 3.0V.
3. Open-Loop Protection Circuit
The external output voltage setting type features a protection circuit that suppresses the regulator’s output voltage rise to a safe level upon detecting an open fault. This reduces the need for additional external components, contributing to cost savings and space-efficient designs
4. Automotive Quality
The product undergoes three-temperature tests (low temperature, normal temperature, and high temperature). It is also planned to meet AEC-Q100 reliability and quality standards set by the Automotive Electronics Council, with PPAP (Production Part Approval Process) compliance forthcoming. The product is suitable for use in the harsh environments commonly found in automotive applications.
Major Specifications
・Input voltage ：6.0V～66.0V
3.0V～66.0V （when output current is less than 10mA）
・Input withstand voltage：80V
・Output voltage (internally set)：1.8V, 3.0V, 3.3V, 5.0V
・Output voltage (externally set)：1.8V～12.0V
・Output voltage accuracy ：±1.8％（Tj＝-40℃～+125℃）
・Current consumption during operation ：2.0µA typ.
・Power-off current consumption：0.1µA typ.
・Output current ：S-19230Series Up to 100mA output（VIN≥VOUT(S)+3.0V）
・Output current ：S-19231Series Up to 200mA output（VIN≥VOUT(S)+5.0V）
・Input capacitors ：Ceramic capacitors of 0.1 µF or more
・Output capacitors ：Ceramic capacitors of 1.0 µF or more
・Built-in open-loop protection circuit
・Built-in overcurrent protection circuit (limits current of output transistor)
・Built-in thermal shutdown circuit (typical detection temperature: 170ºC)
・Built-in ON/OFF circuit
・Operation temperature range：Ta= -40°C to +125°C
・Packages Available：TO-252-5S(A)、HSOP-8A、HTMSOP-8
・Planned for compliance with AEC Q-100
・PPAP capable
Application Examples
・ Power supplies for various sensors
・ Power supply for CAN transceivers
・ Power supply for LIN transceivers
・ Automotive applications (engines, transmissions, suspensions, ABS, EV/HEV/PHEV, etc.)
・Constant voltage power supply for in-vehicle electronic applications
