BD49L40G-TL

Overview

The BD49L40G-TL is a CMOS voltage detector IC from the ROHM BD49 series, designed for monitoring single power supply lines. It features a fixed threshold voltage of 4.0V with ±1% accuracy and a reset delay time of 100µs. The device operates within a supply voltage range of 0.95V to 10V and consumes only 900nA of operating current. It utilizes an SSOP-3 package and supports a wide operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output structure for low power consumption
• High precision voltage detection capability
• Compact surface-mount packaging

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing reliable power supervision
• Embedded circuits with limited board space

Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm datasheet revisions match design requirements. Check RoHS compliance documentation for regulatory adherence. Validate package markings against official specifications. Ensure storage conditions meet moisture sensitivity level standards before assembly.

Selection Notes

Consider the BD49L40G-TL for applications requiring precise 4.0V monitoring with minimal quiescent current. Evaluate compatibility with system voltage ranges and thermal constraints. Assess package availability and lead times given end-of-life status. Compare performance metrics against alternative supervisory circuits if newer components are preferred.

Part Context

This component belongs to the BD49 series of voltage detectors manufactured by ROHM Semiconductor. These ICs are engineered for efficient power management in compact electronic designs. The series emphasizes low power operation and high accuracy for critical system supervision tasks.

Replacement Considerations

BD5240G-1 is listed as a recommended replacement with similar specifications.