BD87B28G-CTR

Overview

The BD87B28G-CTR is an automotive voltage detector IC integrating a reset circuit and a watchdog timer. It monitors microcontroller input voltage and clock signals with a typical detection voltage of 2.8 V and ±2.0% precision. The device supports a reset active range of 2 to 20 V and operates within -40°C to +125°C. Static current consumption is low at 4.5 µA (ON) and 3 µA (OFF). It features an open-drain output, no manual reset, and hysteresis of VDET×0.036. The component is AEC-Q100 Grade 1 qualified and housed in an SSOP6 package.

Feature Summary

• Integrates under-voltage detection and watchdog timer for system redundancy
• Low static current consumption across wide input voltage ranges
• Configurable reset delay and watchdog monitoring times via external capacitors
• Supports functional safety analysis for automotive applications

Applications

• Microcontroller input voltage monitoring in automotive systems
• Microcontroller clock signal supervision via integrated watchdog timer
• Redundancy enhancement for vehicle electronic control units

Procurement Notes

Verify the specific suffix G-CTR against the official datasheet to confirm the SSOP6 package and taping quantity specifications. Ensure the order matches the FS supportive classification requirements for automotive functional safety compliance. Confirm RoHS status and operating temperature range alignment with target application environments before procurement.

Selection Notes

Select this component when a fixed 2.8 V detection threshold is required for automotive microcontrollers. It is suitable for designs needing integrated watchdog functionality without external components. Consider the SSOP6 package constraints and open-drain output compatibility with the target logic levels. Verify that the external resistor and capacitor values can achieve the desired reset delay and hysteresis settings.

Part Context

This part belongs to Rohm Semiconductor's automotive voltage detector series designed for functional safety support. It shares architectural similarities with other models in the BD87B family, differing primarily in detection voltage thresholds and package options. The series targets high-reliability automotive electronics requiring low power consumption and robust fault monitoring capabilities.

Replacement Considerations

Check for alternative parts with identical 2.8 V detection voltage and SSOP6 packaging. Verify pin-to-pin compatibility if substituting with other ROHM voltage detectors. Ensure the replacement maintains AEC-Q100 Grade 1 qualification and functional safety support status.