BD52E27G-TR

Overview

The BD52E27G-TR is a CMOS voltage detector IC with an adjustable delay timer, manufactured by ROHM Semiconductor. It features an N-channel open-drain output and a typical under-voltage detection threshold of 2.7V with ±1% precision. The reset active voltage range spans from 0.95V to 10V. Circuit current consumption is 0.85µA at VDET=4.8V. Hysteresis voltage is defined as VDET multiplied by 0.05. Low-level output current is 0.4mA, while high-level output current is 2mA. The device operates within a temperature range of -40°C to 105°C and is housed in an SSOP5 package measuring 2.9mm x 2.8mm.

Feature Summary

• Delay time is controlled by an external capacitor connected to the device.
• Features ultra-low current consumption for power-efficient monitoring applications.
• Provides high accuracy detection voltage with tight tolerance specifications.

Applications

• Microcontroller reset circuits requiring specific voltage thresholds
• Logic circuit protection against under-voltage conditions
• Battery-powered systems needing low standby current

Procurement Notes

Verify supply status carefully as this component is marked Not Recommended for New Designs (NRND). Confirm that existing inventory meets project requirements before procurement. Ensure ordering part number matches BD52E27G-TR for correct taping packaging. Check RoHS compliance documentation if required for specific regulatory standards. Validate pinout compatibility with target PCB layout.

Selection Notes

Select this component only for legacy system maintenance or replacement where the NRND status is acceptable. Compare performance metrics against recommended alternatives like the BD5227G-1 series for new designs. Evaluate if the specific 2.7V threshold and adjustable delay features are strictly necessary. Consider package size constraints and thermal operating limits during selection.

Part Context

This part belongs to the BD52Exxx-M series of free delay time setting CMOS voltage detectors. It is designed for applications requiring precise voltage monitoring with customizable reset timing. The series offers various detection voltages in 0.1V increments. The BD52E27G-TR specifically targets the 2.7V detection point within this lineup.

Replacement Considerations

The BD5227G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence and updated supply status before substitution.

FAQ

How is the reset delay time determined?

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

What is the hysteresis voltage characteristic?

The hysteresis voltage is set internally to VDET multiplied by 0.05.