BD4937G-TR

Overview

The BD4937G-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for supervisory circuit applications. It features a fixed detection threshold of 3.7V with a reset output that is active low. The device utilizes a push-pull/totem pole output configuration and operates within a supply voltage range of 0.95V to 10V. It is housed in a compact 5-SSOP (SC-74A) surface-mount package. The component supports an operating temperature range from -40°C to +105°C and complies with RoHS3 standards.

Feature Summary

• Provides precise voltage monitoring with a fixed 3.7V detection threshold
• Features a low-active push-pull output for direct logic interfacing
• Operates over a wide supply voltage range up to 10V
• Designed for industrial temperature environments up to 105°C

Applications

• Microprocessor system reset circuits
• Portable equipment power management
• Battery-powered device supervision
• General-purpose voltage monitoring

Procurement Notes

Verify the specific suffix 'G' and '-TR' to confirm the SSOP-5 package and tape-and-reel packaging format. Confirm RoHS3 compliance status as required by project specifications. Check current lifecycle status, as this part may be discontinued or not recommended for new designs. Ensure compatibility with existing PCB footprints for SC-74A packages during procurement planning.

Selection Notes

Select this component when a fixed 3.7V threshold is required for system supervision. The push-pull output eliminates the need for external pull-up resistors compared to open-drain alternatives. Consider the 10V maximum supply rating for systems exceeding standard 5V rails. Verify that the 5-SSOP package dimensions fit the available board space constraints.

Part Context

This component belongs to the BD49 series of standard voltage detectors from Rohm Semiconductor. These devices are engineered for reliable power management in electronic systems requiring accurate voltage supervision. The series offers various threshold options to suit different logic families and battery chemistries.

Replacement Considerations

BD5232G-1 is listed as a replacement for the BD4932G variant within the same family, offering similar package and function characteristics. Verify electrical parameter alignment before substitution.