BD49L49G-TL

Overview

The BD49L49G-TL is a voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It features a fixed detection threshold of 4.9 V with an accuracy of 1%. The device utilizes a CMOS output type and operates within a maximum supply voltage of 10 V. It includes a reset delay time of 100 us and consumes a working supply current of 900 nA. The component is housed in an SSOP-3 package suitable for surface mount installation. It functions without manual reset or watchdog timer capabilities and supports an operating temperature range from -40 C to +105 C.

Feature Summary

• Provides precise voltage supervision with high accuracy for reliable system monitoring
• Features ultra-low current consumption for energy-efficient operation
• Utilizes compact SSOP-3 packaging for space-constrained designs

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors as the part status is listed as obsolete. Confirm package integrity and moisture sensitivity handling requirements before assembly. Cross-reference datasheet specifications against current design needs due to potential availability constraints. Ensure compliance with RoHS directives if applicable to the target market.

Selection Notes

Select this component when a fixed 4.9 V threshold with CMOS output is required. Consider the 900 nA supply current for battery life optimization. Evaluate the SSOP-3 footprint against board space limitations. Verify that the 100 us reset delay meets system timing requirements without external components.

Part Context

This voltage detector belongs to the BD49 series of supervisory circuits known for high precision and low power consumption. The series offers various detection voltages in 0.1 V increments, catering to diverse power rail monitoring needs. The BD49L49G-TL specifically targets applications requiring a 4.9 V trip point with open-drain or CMOS output options depending on the suffix.

Replacement Considerations

BD48L49G-TL: Similar voltage detector with open drain output instead of CMOS.