Nisshinbo high-accuracy voltage detectors

Less external components, leakage current and output type options:

When monitoring high voltages, it is crucial to consider the drawbacks of using traditional low-voltage detectors with an open drain output. These detectors require additional resistors to divide the monitored voltage and pull-up resistors at the output, which can lead to an increase in component count and leakage current concerns. However, the SENSE pin of the NV3600 and NV3601 series has a high withstand voltage and has no need for a voltage divider resistor. Furthermore, you have the option to choose between NMOS open-drain or CMOS output types. Both features effectively eliminate the leakage current issue and do not require additional external components.

NV3600 Voltage detector with adjustable hysteresis:

If you need to monitor power supplies that experience large voltage fluctuations, such as those found in automotive batteries or in noisy environments, the NV3600 series is designed to meet your needs. This series allows you to set the detection voltage (VDET) and release voltage (VREL) individually. By selecting the appropriate hysteresis width based on your system requirements, you can avoid false detection and misinterpretation, even when the voltage fluctuation is significant.

NV3601 Window voltage detector with under and overvoltage detection:

For reliable system operation and safety, specific systems require monitoring of abnormalities not only when the monitored voltage decreases but also when it increases beyond a certain threshold. The NV3601 series provides window monitoring, enabling simultaneous monitoring of undervoltage and overvoltage with a single chip, saving components on the board.

Both products are available in consumer, industrial and automotive versions (AEC-Q100 compliant soon). In addition, the IC is embedded in a small SOT-23-5 package measuring only L2.9 x W2.8 x H1.1 mm. Samples and evaluation boards are available now and can be obtained from our approved local distributors or online partners.

Specifications NV3600, NV3601:

• Input Voltage Range: 2.4 V to 6.0 V
• SENSE Pin Voltage Range: 0 V to 42 V
• Undervoltage Detection (NV3600 & NV3601): 3.3 V to 19.8 V (0.1 V step)
• Undervoltage Release (NV3600): 4.5 V to 22.2 V (0.1 V step)
• Overvoltage Detection: (NV3601): 4.5 V to 22.2 V (0.1 V step)
• Hysteresis (NV3601): With Hysteresis (Typ. 1.0%) or Without
• Accuracy: ±0.6% (Ta = 25°C)
• Quiescent Current: Max. 4.0 µA (Includes SENSE pin current)
• Output Type: NMOS Open Drain or CMOS
• Operating Temperature Range: -40°C to 125°C / 105°C (Automotive, Industrial) / (Consumer) grade
• Package: SOT-23-5-DC (2.9 x 2.8 x 1.1 mm)