BD73H38G-2CTR

Overview

The BD73H38G-2CTR is a Nano Energy™ overvoltage detection voltage detector IC manufactured by Rohm Semiconductor. It features a CMOS output type and operates within a supply voltage range of 0.8 V to 6 V. The device detects an input threshold voltage of 3.76 V with a precision of ±1.33%. It has no manual reset, watchdog timer, or hysteresis width. The circuit current is 0.27 µA in the ON state and 0.3 µA in the OFF state. Output currents are 1 mA (Low) and 2 mA (High). It supports AEC-Q100 Grade 1 qualification for automotive applications.

Feature Summary

• CMOS output architecture providing high-precision overvoltage detection without hysteresis.
• Ultra-low power consumption achieved through Nano Energy CMOS process technology.
• Automotive-grade reliability certified under AEC-Q100 Grade 1 standards.

Applications

• Overvoltage protection circuits for microcontrollers and CPUs
• System monitoring in automotive electronic control units
• Voltage supervision for DSP and embedded systems

Procurement Notes

Verify the specific suffix G-2CTR against the official Rohm datasheet to confirm the SSOP-5 package and tape-and-reel quantity. Ensure the application environment remains within the specified -40°C to +125°C operating temperature range. Confirm that the 3.76 V threshold aligns with system requirements, as this variant lacks adjustable thresholds or hysteresis options.

Selection Notes

Select this component when a fixed 3.76 V overvoltage threshold is required for CMOS-compatible logic interfaces. It is suitable for designs prioritizing low standby current and automotive functional safety support. Avoid if hysteresis is needed to prevent noise-induced false triggering, as this model specifies zero hysteresis width.

Part Context

This part belongs to the BD73Hxx-2C series of Nano Energy™ voltage detectors. It complements the BD70Hxx-xC series, which offers Nch open-drain outputs. Both series share the same ultra-low power characteristics and automotive qualification but differ in output drive capabilities and interface compatibility.

Replacement Considerations

The BD73H35G-2CTR and BD73H36G-2CTR are direct substitutes within the same family, differing only in their detection thresholds of 3.46 V and 3.56 V respectively. Verify that the system can tolerate these alternative threshold voltages before substitution.