BD5218G-2CGTR

Overview

The BD5218G-2CGTR is a Nano Energy™ CMOS voltage detector IC featuring adjustable delay time, designed for automotive applications. It operates within a supply voltage range of 0.8V to 6V with a typical under-voltage detection threshold of 1.8V and ±3% precision. The device provides an N-ch open-drain output with a reset active state of low. Key electrical parameters include a circuit current of 0.23µA (ON) and 0.27µA (OFF), hysteresis voltage of VDET x 0.05, and L-output currents of 1mA (LowVol) and 2mA (HighVol). It functions from -40°C to 125°C in an SSOP5 package.

Feature Summary

• Features adjustable reset delay time set by an external capacitor.
• Provides high-precision voltage detection with ±3% accuracy.
• Supports functional safety analysis for automotive use.

Applications

• Automotive electronic system reset circuits
• Microcontroller power supply monitoring
• Battery backup system supervision

Procurement Notes

Verify the specific suffix '2C' corresponds to the N-ch open-drain output configuration as documented in the official datasheet. Confirm that the SSOP5 package and taping packaging details match the project requirements. Ensure the component meets the required AEC-Q100 grade standards for the intended automotive application environment.

Selection Notes

Select this component when an adjustable delay timer is required alongside precise voltage monitoring. The N-ch open-drain output is suitable for interfacing with various logic levels. Consider the low standby current for battery-powered systems. Verify that the external capacitor selection allows for the desired delay duration within the specified temperature range.

Part Context

This part belongs to the BD52xxG-2C series of Nano Energy™ CMOS voltage detectors. It shares the same family characteristics as other models like BD5209G-2C and BD5219G-2M, offering similar low-power consumption and adjustable delay features. The series is optimized for automotive reliability and functional safety support.

Replacement Considerations

The BU4318G is listed as a replacement with the same pinout and package, though it is not recommended for new designs. Check the datasheet for differences in precision and operating voltage ranges before substitution.

FAQ

How is the reset delay time determined?

The reset delay time is adjustable and set by connecting an external capacitor to the designated pin on the IC.

What is the output type of the BD5218G-2CGTR?

It features an N-ch open-drain output type with a reset active state of low.