BD45402G-TR

Overview

The BD45402G-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for supervisory circuit applications. It operates within a supply voltage range of up to 10 V and features an open-drain output type with a low-active reset signal. The device monitors a specific threshold voltage of 4.0 V with a precision of ±1%. It includes a fixed reset delay timer of 50 ms and supports manual reset functionality. The component is available in a 5-SSOP (SC-74A) surface-mount package and functions reliably across a temperature range of -40°C to +105°C.

Feature Summary

• Provides precise voltage monitoring with a fixed detection threshold and high accuracy.
• Features an open-drain output interface compatible with various logic families.
• Includes manual reset capability for controlled system recovery operations.

Applications

• Microprocessor system power supervision
• Portable equipment voltage monitoring
• Battery-powered device protection circuits

Procurement Notes

Verify the exact datasheet revision and ordering information directly with Rohm Semiconductor or authorized distributors, as this component may be subject to end-of-life status or replacement recommendations. Confirm package availability and RoHS compliance details prior to integration into new designs.

Selection Notes

Select this component when a fixed 4.0 V threshold with a 50 ms delay is required for single-supply systems. Ensure the open-drain output configuration aligns with the downstream logic requirements and that the operating temperature range meets the environmental specifications of the target application.

Part Context

This part belongs to the BD45 series of voltage detectors from Rohm Semiconductor. The series offers various threshold voltages and delay times to suit different supervisory needs. The BD45402G-TR specifically targets applications requiring a 4.0 V detection point with standard delay characteristics in a compact SSOP-5 package.

Replacement Considerations

BD5240G-1TR is listed as a similar specification replacement with the same package type. Verify electrical parameter compatibility before substitution.