BD49L41G-TL

Overview

The BD49L41G-TL is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features a fixed detection threshold of 4.1V with an accuracy of 1%. The device operates within a maximum supply voltage of 10V and draws a typical operating current of 900 nA. It provides a reset delay time of 100 us and functions across a temperature range of -40°C to +105°C. Housed in an SSOP-3 package, it lacks manual reset, watchdog timer, or battery backup switch capabilities.

Feature Summary

• CMOS output type for direct logic interface compatibility
• High accuracy voltage detection with 1% threshold tolerance
• Ultra-low current consumption suitable for battery-powered systems

Applications

• Portable electronic devices requiring low standby current
• Microprocessor system reset circuits
• Battery voltage monitoring applications

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked as obsolete. Confirm package integrity and pin alignment against the official datasheet specifications before integration. Check for moisture sensitivity handling requirements during storage and reflow processes to ensure reliability.

Selection Notes

Select this component when a fixed 4.1V threshold is required with minimal quiescent current. Ensure the application does not need manual reset or watchdog functionality. Verify that the SSOP-3 footprint matches the PCB design constraints and that the 10V maximum input rating exceeds the system supply voltage.

Part Context

This part belongs to the BD49 series of voltage detectors, characterized by CMOS outputs and high precision. It is distinct from the BD48 series which utilizes open-drain outputs. The BD49L41G-TL specifically targets applications needing a 4.1V trip point within the standard ROHM supervisory circuit portfolio.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.