Industry news--Karmin Electronic (HK) Limited

Ultra low static current! Nexperia LDO voltage regulator is suitable for multiple scenarios in automotive and industrial applications
2025-02-17

Nexperia has recently launched a series of ultra-low static current universal low dropout (LDO) regulators that comply with the AEC-Q100 standard. This new series also includes high-precision LDO with output following, integrated output protection function, and a wide input voltage range, so it can be directly connected to car batteries.

These LDOs adopt thermal optimization design, which can also be used for information entertainment systems under cold start conditions ADAS、 Provide a stable voltage source for ripple sensitive loads in automotive applications such as remote information processing and lighting systems. LDO with output following function has excellent output protection capability and can demonstrate excellent performance in body control modules, area control units, and power systems. It can be used in scenarios involving external loads such as sensors. In addition to automotive applications, these LDOs are also suitable for industrial fields, including power tools, electric bicycles, and battery packs.

In battery powered automotive applications, low static current (Iq) and turn off current (ISHUT) are crucial for energy conservation and extending battery life. The normally open system requires maintaining Iq at an ultra-low level and maintaining stable output throughout the entire temperature range. The CAN wake-up system and some systems with sleep mode require ultra-low ISHUT to minimize power consumption in deep sleep (shutdown) mode as much as possible. This series of LDOs has outstanding energy efficiency performance. The static current under light load is as low as 5.3 μ A (typical value), and the turn off current under shutdown mode is only 300 nA (typical value). It is an ideal power supply option for normally open components such as microcontroller (MCU), controller area network (CAN) or local area internet (LIN) transceiver in standby and CAN wake-up systems.

LDO with output follower can further meet the needs of PCB board external power supply scenarios (such as sensor power supply). Such applications typically require highly reliable output protection to prevent potential risks such as ground short circuits, battery short circuits, and reverse currents. To address these challenges, the LDO integrated comprehensive protection mechanism in this series ensures stable operation in harsh environments. In addition, in proportional sensing or measurement applications, these LDOs can provide excellent output accuracy, with an output error of only ± 5 mV when following the supply voltage of analog-to-digital converters (ADCs) or MCUs.

The universal LDO can provide stable 3.3 V or 5 V output (with an accuracy of ± 2%) within a wide input voltage range of 3-40 V, and can be directly connected to car batteries without the need for additional pre stabilization circuits. This series of LDOs integrates protection functions such as short circuit protection, overcurrent protection, and thermal shutdown, and can operate stably within the range of -40 ℃ to 125 ℃ (ambient temperature) or -40 ℃ to 150 ℃ (junction temperature). In addition, some devices in this series are equipped with Power Good (PG) output voltage status monitoring function, which can be used to support system design related to functional safety.

The NEX90x30-Q100 LDO has a 300 mA output current capability and offers multiple packaging options, including an 8-pin HTSSOP package (3 mm × 3 mm) with thermal optimization and bottom heat dissipation, and a DFN6 package (2 mm × 2 mm). For lower load current applications, the NEX90x15-Q100 device provides a 150 mA output current, offering higher cost-effectiveness and flexible packaging options such as SOT23-5, SOT223-4, and HWSON6 (DFN-6). The LDO NEX91207-Q100 has an output current of 70mA and is packaged in SOT23-5 and SOT23-5S.

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