BD70H38G-2CTR

Overview

The BD70H38G-2CTR is an automotive-grade voltage detector IC manufactured by ROHM Semiconductor. It features a typical threshold voltage of 3.76 V with ±1.33% precision. The device operates within a power supply range of 0.8 V to 6 V and supports an operating temperature range from -40°C to +125°C. It utilizes a CMOS output type with a reset active state of High. Key electrical characteristics include a circuit current of 0.27 µA in the ON state and 0.3 µA in the OFF state, with output currents of 1 mA (Low) and 2 mA (High). The component is housed in a compact SSOP5 package.

Feature Summary

• AEC-Q100 qualified for Grade 1 automotive reliability standards
• Ultra-low consumption current achieved through Nano Energy CMOS technology
• High-precision voltage detection without hysteresis width
• Compact SSOP5 package designed for lightweight and thin applications

Applications

• Microcontroller system supervision
• CPU power monitoring
• DSP voltage detection

Procurement Notes

Verify the specific suffix G-2CTR against the official ROHM datasheet to confirm the exact threshold voltage and output configuration. Ensure compatibility with AEC-Q100 Grade 1 requirements if used in safety-critical automotive environments. Confirm that the SSOP5 package dimensions match the PCB footprint design constraints before finalizing procurement orders.

Selection Notes

Select this component when high accuracy and minimal power consumption are critical for battery-operated or energy-sensitive automotive systems. The absence of a watchdog timer and manual reset feature simplifies the external circuit design. Choose this model over open-drain variants if a push-pull CMOS output is required for direct logic interfacing without additional pull-up components.

Part Context

This part belongs to the BD70Hxx series of Nano Energy™ voltage detectors developed specifically for automotive use. The series offers both Nch open-drain and CMOS output options to accommodate different application needs. The BD70H38G-2CTR represents the CMOS output variant with a 3.76 V detection threshold, providing a reliable solution for monitoring power rails in harsh automotive environments.

Replacement Considerations

Direct substitutes within the same family include BD70H38G-2C (cut tape) or other threshold variants like BD70H37G-2C if a different voltage level is acceptable. Verify pinout compatibility and thermal performance when replacing with non-ROHM equivalents.