BD49L27G-TL

Overview

The BD49L27G-TL is a CMOS voltage detector IC from the BD49 series by ROHM Semiconductor. It features a fixed threshold voltage of 2.7 V with 1% accuracy and a reset delay time of 100 µs. The device operates within a supply voltage range up to 10 V and consumes only 900 nA of operating current. It provides a CMOS output type without manual reset or watchdog timer functions. The component is housed in an SSOP-3 package and supports operation temperatures from -40°C to +105°C.

Feature Summary

• Ultra-low power consumption suitable for battery-operated applications
• High precision voltage detection with 1% threshold accuracy
• Compact three-terminal surface mount packaging

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing reliable voltage supervision
• Embedded circuits monitoring power supply integrity

Procurement Notes

Verify component authenticity through authorized distributors as availability may vary. Confirm package integrity and moisture sensitivity levels prior to assembly. Check for end-of-life status or obsolescence notices from the manufacturer before finalizing design-in decisions.

Selection Notes

Select this component when a fixed 2.7 V threshold is required with minimal quiescent current. Ensure the application does not need manual reset or watchdog features. Verify that the SSOP-3 footprint matches the PCB layout constraints and thermal requirements.

Part Context

Part of the BD49 series, designed for high-accuracy voltage monitoring. The BD49L27G-TL specifically targets applications where precise 2.7 V detection is critical. It complements other variants in the family offering different threshold voltages while maintaining consistent performance characteristics.

Replacement Considerations

Consider BD49LxxG-TL variants with different thresholds if voltage requirements change. Evaluate BD52xxG series for adjustable threshold options. Verify pin compatibility and electrical specifications before substituting.