BD70H31G-CTR

Overview

The BD70H31G-CTR is a Nano Energy™ voltage detector IC manufactured by ROHM Semiconductor. It features an Nch open-drain output with a typical detection voltage of 3.06V and a precision of ±1.63%. The device operates within a reset active voltage range of 0.8V to 6V. It consumes ultra-low current, with circuit current at 0.27µA (ON) and 0.3µA (OFF). The component supports automotive applications, operating between -40°C and +125°C in an SSOP5 package.

Feature Summary

• Ultra-low power consumption achieved through CMOS process technology
• High-precision voltage detection without hysteresis width
• Automotive grade qualification supporting functional safety analysis

Applications

• Automotive electronic system monitoring
• Voltage supervision for battery backup circuits
• Microcontroller reset signal generation

Procurement Notes

Verify the specific suffix 'CTR' against official datasheets to confirm taping packaging and quantity specifications. Ensure the part number matches the exact detection voltage variant required for the design. Confirm RoHS compliance status and automotive qualification grades prior to ordering. Cross-reference the manufacturer's latest release notes for any obsolescence or lifecycle changes.

Selection Notes

Select this component when low quiescent current is critical for battery-operated automotive systems. The absence of hysteresis requires careful PCB layout to prevent noise-induced false triggering. Compare with the BD70Hxx-xC series if Nch open-drain output is preferred over CMOS options. Ensure the input voltage range aligns with the system's maximum supply voltage limits.

Part Context

This part belongs to ROHM's Nano Energy™ family of voltage detectors, designed for high accuracy and minimal power usage. It complements the BD73Hxx-2C series, which offers CMOS outputs instead of Nch open-drain. The family targets automotive and industrial applications requiring reliable voltage supervision with strict power constraints.

Replacement Considerations

The BD5243G-1 is listed as a similar level replacement with the same SSOP5 package. Verify that the detection voltage and output type compatibility meet the original design requirements before substitution.