BD49K59G-TL

Overview

The BD49K59G-TL is a CMOS voltage detector IC from the BD49 series by ROHM Semiconductor. It features a fixed detection threshold of 5.9V with an accuracy of 1%. The device operates within a supply voltage range of 2.3V to 10V and consumes a typical operating current of 900nA. It provides a reset delay time of 100us and lacks manual reset, watchdog timer, or chip enable functions. The component is housed in a compact SSOP-3 package and supports an extended operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic integration
• High precision voltage detection with 1% accuracy
• Ultra-low power consumption suitable for battery applications
• Compact three-pin surface mount packaging

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered devices needing low quiescent current supervision
• Embedded systems utilizing CMOS logic families
• Portable electronics requiring compact supervisory solutions

Procurement Notes

Verify component authenticity through authorized channels as this part is marked as obsolete. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Cross-reference datasheet specifications against current design requirements due to potential lifecycle restrictions. Ensure compatibility with existing PCB footprints and thermal management strategies during procurement planning.

Selection Notes

Select this component when a fixed 5.9V threshold is required with minimal external components. Consider the SSOP-3 package constraints for space-limited designs. Evaluate the 100us reset delay against system timing requirements. Compare power consumption metrics with alternative supervisors if extended battery life is critical. Verify temperature range suitability for the intended operational environment.

Part Context

This voltage detector belongs to the BD49 series, characterized by high accuracy and low current consumption. The series offers various detection voltages in 0.1V increments ranging from 2.3V to 6.0V. These ICs are designed for simple, cost-effective supervision tasks without complex configuration needs. The BD49K59G-TL specifically targets applications requiring precise monitoring near the upper end of the standard supply range.

Replacement Considerations

BD5250G-1TR is listed as a potential substitute. Verify functional equivalence regarding threshold voltage and output type before substitution.