BD49K50G-TL

Overview

The BD49K50G-TL is a CMOS voltage detector IC from the ROHM BD49 series, designed for monitoring single power supply lines. It features a fixed detection threshold of 5.0 V with an accuracy of ±1%. The device operates within a supply voltage range of 2.3 V to 10 V and consumes a typical operating current of 900 nA. It provides a reset delay time of 100 µs and lacks manual reset or watchdog timer functions. Packaged in a compact SSOP-3 format, it supports surface-mount installation and functions across an industrial temperature range of -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic compatibility
• High precision voltage detection with ±1% accuracy
• Ultra-low power consumption suitable for battery-operated systems

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered devices needing low quiescent current
• Industrial control systems operating in wide temperature environments

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance details via official datasheets. Check regional sales restrictions as availability may vary by location. Ensure storage conditions account for moisture sensitivity classification prior to assembly.

Selection Notes

Select this component when a fixed 5.0 V threshold is required without adjustable delay options. Consider the SSOP-3 package constraints for board space limitations. Evaluate the 100 µs reset delay against system timing requirements. Verify that the absence of manual reset functionality aligns with the design architecture.

Part Context

Part of the BD49xxx series of high-accuracy, low-current voltage detectors. The series offers various detection voltages from 2.3 V to 6.0 V in 0.1 V increments. All devices share similar CMOS output characteristics and low power profiles, differing primarily in their specific threshold settings.

Replacement Considerations

BD5250G-1TR is listed as a similar specification replacement with comparable 5.0 V detection capability.