BD49K40G-TL

Overview

The BD49K40G-TL is a high-accuracy voltage detector IC from ROHM Semiconductor, featuring a CMOS output. It monitors a single input channel with a fixed threshold voltage of 4.0V. The device operates within a supply voltage range of 2.3V to 10V and draws a typical operating current of 900nA. It provides an active low reset signal with a 100µs delay. Accuracy is specified at 1%, and it functions across a temperature range of -40°C to +105°C in a compact 3-pin SSOP package.

Feature Summary

• CMOS output interface for direct logic integration
• High detection accuracy with 1% tolerance
• Ultra-low power consumption suitable for battery applications

Applications

• Processor supervision systems
• Battery-powered electronic devices
• Portable equipment power management

Procurement Notes

Verify component authenticity through authorized channels due to End-of-Life status. Confirm package integrity and moisture sensitivity handling requirements during storage and assembly. Ensure replacement strategies are aligned with current inventory levels as the manufacturer has announced discontinuation.

Selection Notes

Select this component for designs requiring precise 4.0V monitoring with minimal quiescent current. Consider the active low output polarity and fixed delay characteristics when designing reset circuits. Evaluate thermal performance within the specified industrial temperature range for reliable operation.

Part Context

This part belongs to the BD49xxx series of voltage detectors, which offer various threshold options from 2.3V to 6.0V. The series is characterized by high accuracy and low current consumption, utilizing CMOS technology for efficient power management in portable and embedded applications.

Replacement Considerations

Public confirmed substitute part numbers: None available.