BD49E33G-TR

Overview

The BD49E33G-TR is a high-accuracy, low-current voltage detector IC from the ROHM BD49xxx series. It features a CMOS output and monitors a single input channel with a typical detection threshold of 3.3V. The device operates within a supply voltage range of -0.3V to 10V and maintains an accuracy of ±1%. It includes a reset delay timer of 100µs and offers a reset active voltage range of 0.95V to 10V. The circuit current is typically 0.60µA (ON) and 0.85µA (OFF) at Vs=4.8V. Hysteresis is set at Vs x 0.05. It is housed in a 5-pin SSOP package.

Feature Summary

• CMOS output type for direct logic interface
• High detection accuracy of ±1%
• Low power consumption suitable for battery applications
• Integrated reset delay timer

Applications

• Processor supervisor circuits
• Battery-powered system monitoring
• Portable electronic devices

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND). Confirm that the replacement part BD5233G-1 matches the required package and electrical specifications before procurement. Ensure the design supports the transition to the recommended alternative if new production is planned.

Selection Notes

Select this component for existing designs requiring a 3.3V threshold with CMOS output. For new designs, consider the recommended replacement BD5233G-1 which offers adjustable delay and open-drain output. Verify temperature range requirements against the -40°C to +105°C specification.

Part Context

Part of the BD49xxx series of voltage detectors. The series provides various detection voltages from 2.3V to 6.0V in 0.1V increments. The BD49E33G-TR specifically targets 3.3V monitoring applications with high precision and low current consumption.

Replacement Considerations

BD5233G-1 is the recommended replacement. It shares the same SSOP5 package but features an open-drain output and adjustable delay timer instead of fixed CMOS output.