BD49K49G-TL

Overview

The BD49K49G-TL is a CMOS output voltage detector IC from the BD49 series, manufactured by ROHM Semiconductor. It features a detection voltage of 4.9V with ±1% precision and operates within a reset active voltage range of 0.95V to 10V. The device consumes 0.60μA in the ON state and 0.85μA in the OFF state at VS=4.8V. It utilizes a 3-pin SSOP package and lacks manual reset or watchdog timer functions.

Feature Summary

• CMOS push-pull output structure for direct processor interface
• High-precision voltage detection with ±1% threshold accuracy
• Ultra-low current consumption suitable for battery-powered systems

Applications

• Processor supervisor circuits requiring precise power monitoring
• Battery-operated devices needing low standby current
• Embedded systems with single-channel voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance and moisture sensitivity level (MSL 3) before assembly. Check for obsolescence notices as this part may be discontinued. Ensure proper ESD handling during storage and installation.

Selection Notes

Select this component when a fixed 4.9V threshold is required without adjustable delay features. Consider the BD5249G-1TR as an alternative if adjustable delay or different packaging is needed. Evaluate operating temperature range (-40°C to +105°C) against application requirements.

Part Context

Part of the BD49xxx series of high-accuracy, low-current voltage detectors. The series offers various detection voltages from 2.3V to 6.0V in 0.1V increments. This specific model provides a fixed 4.9V threshold with CMOS output, designed for reliable system supervision in compact applications.

Replacement Considerations

BD5249G-1TR is listed as a similar specification replacement with comparable detection voltage.