BD5237G-TR

Overview

The BD5237G-TR is a single-channel voltage detector IC manufactured by Rohm Semiconductor, designed for monitoring power supply integrity in electronic systems. It features an N-channel open-drain output and provides a reset signal with low active state logic. The device detects under-voltage conditions at a typical threshold of 3.7V with high precision. It operates within a wide voltage range and includes hysteresis to prevent false triggering during noise events. The component is housed in a compact 5-SSOP package suitable for surface-mount assembly.

Feature Summary

• Provides precise under-voltage detection with adjustable hysteresis to ensure stable reset signaling
• Features an N-channel open-drain output compatible with various logic families
• Designed for ultra-low current consumption to extend battery life in portable applications

Applications

• Microcontroller system reset circuits requiring reliable power supervision
• Portable electronic devices where low standby current is critical
• General-purpose logic circuit protection against brown-out conditions

Procurement Notes

Verify the specific ordering suffix and packaging type when sourcing, as availability may vary between tape-and-reel and cut-tape formats. Confirm RoHS compliance status and check for end-of-life notifications, as this component may be subject to discontinuation or replacement by newer series variants. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a fixed 3.7V detection threshold meets system requirements without needing external resistor dividers. Consider the open-drain output configuration if level shifting or wired-OR connections are necessary in the design. Evaluate the operating temperature range to ensure compatibility with the intended environmental conditions, noting the specified limits for industrial or commercial use cases.

Part Context

This part belongs to the BD52xx series of voltage detectors from Rohm, which focuses on low-power supervision solutions. The series offers various detection voltages and output types to support diverse application needs. The BD5237G-TR specifically addresses markets requiring cost-effective and space-efficient power management components for consumer and industrial electronics.

Replacement Considerations

The BU4937F is documented as a similar specification alternative with comparable pinout and electrical characteristics. Verify functional equivalence regarding reset delay and output drive capability before substitution. Check for any differences in package dimensions or thermal performance that might impact PCB layout.