BD49K57G-TL

Overview

The BD49K57G-TL is a CMOS voltage detector IC from the ROHM BD49 series, designed for monitoring single-input power supplies. It features a fixed detection threshold of 5.7V with an accuracy of ±1%. The device operates within a supply voltage range up to 10V and consumes a typical operating current of 900 nA. It provides a reset delay time of 100 µs and utilizes an SSOP-3 package. The component supports an extended industrial 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
• Fixed threshold voltage configuration without manual reset

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Portable electronic device power management
• Industrial control system voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels due to end-of-life status. Confirm RoHS compliance documentation matches specific production batches. Validate package markings against official datasheet specifications to prevent counterfeit substitution during procurement processes.

Selection Notes

Select this component when a fixed 5.7V threshold is required for single-channel voltage monitoring. Ensure compatibility with CMOS logic levels and verify that the SSOP-3 footprint fits the target PCB layout. Consider the 100µs reset delay timing requirements for downstream circuit synchronization needs.

Part Context

This part belongs to the BD49 series of high-precision voltage detectors manufactured by ROHM Semiconductor. The series offers various fixed detection voltages in 0.1V increments ranging from 2.3V to 6.0V. All devices share similar low-current characteristics and CMOS output structures optimized for portable and industrial applications.

Replacement Considerations

BD49L57G-TL serves as a verified alternative within the same series offering identical electrical specifications and package dimensions.