BD4719G-TR

Overview

The BD4719G-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for monitoring power supply integrity in electronic circuits. It operates within a supply voltage range of 0.85 V to 10 V and features a fixed detection threshold of 1.9 V. The device provides a low-active reset signal via an open-collector output interface. It is housed in a compact 5-pin SSOP (SC-74A) surface-mount package and supports operation across an ambient temperature range of -40°C to +75°C.

Feature Summary

• Provides reliable system reset generation through a dedicated voltage monitoring channel with a fixed 1.9 V threshold.
• Features an open-collector output configuration compatible with various logic families for flexible interfacing.
• Designed for low-power applications with minimal current consumption during active monitoring states.

Applications

• Microcontroller and processor power supply supervision
• Battery-operated equipment voltage monitoring
• Industrial control system reset generation

Procurement Notes

Verify component authenticity against the manufacturer's official datasheet specifications, specifically confirming the 1.9 V threshold and open-collector output characteristics. Check for RoHS3 compliance status as indicated in public documentation. Note that this part number may be subject to end-of-life or last-time-buy status; confirm current availability and obsolescence warnings directly with authorized distributors before procurement planning.

Selection Notes

Select this component when a fixed 1.9 V under-voltage detection level is required for system reset functionality. Ensure the application environment remains within the specified -40°C to +75°C operating temperature range. Verify that the open-collector output type aligns with the pull-up requirements of the connected logic circuitry. Consider alternative packages if space constraints differ from the 5-SSOP form factor.

Part Context

This device belongs to the BD47xx series of standard voltage detectors from Rohm Semiconductor. It is functionally similar to other parts in the family but distinguished by its specific 1.9 V detection threshold. The 'TR' suffix indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

BD5239G-1TR is documented as a recommended replacement with the same SSOP5 package and 3.9 V threshold, though electrical parameters differ. Verify compatibility with specific circuit requirements when substituting.