BD87B23FVM-CTR

Overview

The BD87B23FVM-CTR is an automotive voltage detector IC with an integrated watchdog timer (WDT). It monitors microcontroller input voltage via a RESET function and clock signals via the WDT. The typical under-voltage detection threshold is 2.3 V with ±2.0% precision. It operates within a reset active voltage range of 2 to 20 V. Static current consumption is 4.5 µA when ON and 3 µA when OFF. The device supports AEC-Q100 Grade 1 standards and functions as FS supportive for functional safety analysis.

Feature Summary

• Integrates power-on and under-voltage detection reset alongside a watchdog timer for microcontroller monitoring
• Maintains low static current consumption across a wide input voltage range up to 20V
• Supports functional safety analysis requirements for automotive applications

Applications

• Automotive microcontroller system supervision
• Voltage monitoring in redundant automotive systems
• Clock signal monitoring via integrated watchdog timer

Procurement Notes

Verify the specific suffix CTR indicates tape-and-reel packaging configuration. Confirm AEC-Q100 Grade 1 qualification status matches project requirements. Ensure FS supportive classification aligns with functional safety goals. Check RoHS compliance documentation for regulatory adherence. Validate MSOP-8 package dimensions against PCB layout constraints.

Selection Notes

Select this component when a fixed 2.3V detection threshold is required. Choose based on the need for integrated watchdog functionality without external components. Consider the open-drain output type for interface compatibility. Evaluate the -40°C to 125°C operating temperature range for environmental suitability. Assess the low standby current benefits for battery-backed systems.

Part Context

This part belongs to ROHM's automotive voltage detector series designed for high reliability. It complements other models like the BD87B46FVM-C which offers different detection thresholds. The family focuses on integrating reset and watchdog functions to reduce board space. These ICs are engineered specifically for the stringent demands of modern automotive electronics.

Replacement Considerations

Check for pin-compatible alternatives within the same ROHM automotive supervisor family. Verify if other threshold voltages better suit the target microcontroller supply rails. Ensure any substitute maintains AEC-Q100 Grade 1 certification. Confirm equivalent watchdog timer functionality and reset delay characteristics.