BD49K41G-TL

Overview

The BD49K41G-TL is a CMOS output voltage detector IC from the ROHM BD49 series, designed for monitoring power supply voltages. It features a fixed detection threshold of 4.1V with an accuracy of ±1%. The device operates within a supply voltage range of 2.3V to 6.0V and supports a maximum input voltage of 10V. It includes a reset delay timer of 100µs and consumes only 900nA of operating current. The component is housed in a compact 3-pin SSOP package and functions without manual reset or watchdog capabilities.

Feature Summary

• CMOS output structure for low power consumption
• High precision voltage detection with ±1% accuracy
• Compact 3-pin SSOP surface mount packaging

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Portable electronic device power management

Procurement Notes

Verify component authenticity through authorized distributors as this part may be discontinued. Confirm package integrity and moisture sensitivity level handling requirements before assembly. Check for obsolescence notices and ensure compatibility with existing design specifications prior to procurement.

Selection Notes

Select this component when a precise 4.1V threshold is required for single-channel voltage monitoring. Consider the low quiescent current for battery-operated applications. Ensure the 100µs reset delay meets system timing requirements. Verify that the CMOS output drive capability suffices for the connected load.

Part Context

This voltage detector belongs to the BD49Kxx series, which offers various fixed detection voltages from 2.3V to 6.0V in 0.1V increments. The series is characterized by high accuracy and ultra-low current consumption, making it suitable for portable devices requiring reliable power supervision in a minimal footprint.

Replacement Considerations

BD49K40G-TL (4.0V threshold), BD49K42G-TL (4.2V threshold). These parts share identical pinouts and electrical characteristics except for the detection voltage.