BD45332G-TR

Overview

The BD45332G-TR is a supervisory circuit voltage detector manufactured by ROHM Semiconductor, designed for surface-mount installation in SSOP-5 packages. It features a fixed threshold detection voltage of 3.3 V with an accuracy of ±1%. The device provides an open-drain output and includes a manual reset function without a watchdog timer or battery backup switch. It operates within a supply voltage range up to 10 V and maintains a low static current consumption of 800 nA. The component supports a reset delay time of 200 ms and functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Provides precise under-voltage monitoring with a fixed 3.3 V threshold and high accuracy.
• Features an open-drain output compatible with various logic families for system reset generation.
• Includes a manual reset input pin allowing external control over the reset state.
• Designed for ultra-low power applications with minimal static current consumption.

Applications

• Portable electronic devices requiring reliable power management
• Microcontroller system supervision and brown-out protection
• Battery-operated equipment needing low quiescent current
• Industrial control systems operating in wide temperature environments

Procurement Notes

Verify component authenticity through authorized distributors as this part may be subject to obsolescence. Confirm package integrity and pin alignment upon receipt. Check RoHS compliance documentation for environmental regulations. Ensure storage conditions prevent moisture damage prior to soldering. Validate electrical parameters against datasheet specifications during incoming inspection.

Selection Notes

Select this component when a fixed 3.3 V detection threshold is required with manual reset capability. Consider the SSOP-5 package constraints for PCB layout. Evaluate the 200 ms reset delay against system startup requirements. Compare static current specs with other BD45 series variants if lower power is needed. Ensure the open-drain output suits the target microcontroller input impedance.

Part Context

This voltage detector belongs to the BD45 series of supervisory circuits from ROHM Semiconductor. The series offers various detection voltages and delay times tailored for different system needs. The BD45332G-TR specifically targets applications needing a 3.3 V threshold with a standard 200 ms delay. It shares common characteristics like low power consumption and manual reset functionality with other members of the family.

Replacement Considerations

BD5233G-1 is listed as a recommended replacement with the same SSOP-5 package. Verify compatibility regarding reset delay adjustability and current consumption differences before substitution.