BD4840G-TR

Overview

The BD4840G-TR is a standard CMOS voltage detector IC manufactured by Rohm Semiconductor. It features a single-channel under-voltage detection capability with a typical threshold of 4.0V and a precision of ±1%. The device provides an open-drain output that activates in a low state when the supply voltage drops below the detection level. It operates within a wide supply voltage range, supporting monitoring from 0.95V to 10V. The component is designed for surface-mount installation in a compact SSOP-5 package.

Feature Summary

• Provides reliable system reset signals through under-voltage detection logic
• Features low power consumption suitable for battery-operated applications
• Delivers stable performance across extended industrial temperature ranges

Applications

• Microprocessor reset circuits
• Battery-powered equipment monitoring
• Portable electronic devices

Procurement Notes

Verify the specific suffix G-TR against official Rohm documentation to confirm the tape-and-reel packaging configuration. Ensure the part number matches the exact voltage threshold requirements for your design. Cross-reference the RoHS compliance status with current manufacturer declarations. Confirm availability status as this series may have limited new design recommendations.

Selection Notes

Select this component when a precise 4.0V detection threshold is required for single-supervision tasks. Consider the open-drain output compatibility with your microcontroller input levels. Evaluate the SSOP-5 footprint constraints against your PCB layout. Verify that the operating temperature range meets your environmental specifications.

Part Context

This part belongs to the BD48xx series of standard voltage detectors from Rohm. These components are widely used for supervising power supplies in consumer electronics. The series offers various threshold options to accommodate different logic families. The BD4840G-TR specifically targets applications requiring a 4V trip point.

Replacement Considerations

The BD5240G-1TR is documented as a similar replacement with the same package type. Verify electrical parameter alignment before substitution.