BD45392G-TR

Overview

The BD45392G-TR is a voltage detector IC from the BD45 series by ROHM Semiconductor, designed for processor supervision. It features a fixed threshold detection voltage of 3.9 V with an accuracy of ±1%. The device operates within a supply voltage range up to 10 V and provides an open-drain output. It includes a manual reset function and a fixed reset delay time of 200 ms. The component is housed in a 5-pin SSOP package and supports operation across a temperature range of -40°C to +105°C.

Feature Summary

• Built-in counter timer delay circuit eliminates the need for external capacitors for delay setting
• High precision voltage detection with ±1% accuracy
• Low current consumption utilizing CMOS process technology
• Supports manual reset functionality for system control

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Embedded systems needing reliable power-on reset signals
• Battery-powered devices requiring low standby current consumption

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance documentation matches specific manufacturing batches. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet to maintain package integrity prior to assembly.

Selection Notes

Select this component when a fixed 3.9 V threshold is required for system supervision. Consider the open-drain output compatibility with target logic levels. Evaluate the 200 ms fixed delay against system startup requirements. Verify that the SSOP-5 package fits the available PCB footprint constraints.

Part Context

This part belongs to the BD45xxx series of voltage detectors, which offers a wide range of detection voltages in 0.1V steps. The series is characterized by high accuracy and low power consumption, suitable for various portable and industrial applications requiring stable power management supervision.

Replacement Considerations

BD5239G-1 is listed as a recommended replacement with the same SSOP-5 package and 3.9 V threshold. Note differences in reset delay adjustability and operating voltage ranges before substitution.