BD5329FVE-TR

Overview

The BD5329FVE-TR is a single-channel voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It operates within a supply voltage range of 0.95 V to 10 V and features a typical under-voltage detection threshold of 2.9 V with ±1% precision. The device utilizes a CMOS output type with an active-low reset signal and includes an adjustable delay timer controlled by an external resistor. Packaged in a compact VSOF5 (1.6x1.6 mm) surface-mount format, it supports operation from -40°C to +125°C. Key electrical characteristics include a hysteresis voltage of VDET x 0.05 and low circuit current consumption.

Feature Summary

• Features an adjustable reset delay timer allowing customization via an external resistor connected to the delay pin.
• Provides high-precision voltage monitoring with ±1% accuracy on the detection threshold.
• Utilizes a compact VSOF5 package suitable for space-constrained surface-mount designs.
• Offers wide operating temperature range and broad input voltage coverage for versatile system integration.

Applications

• Portable electronic devices requiring reliable power management and brown-out protection.
• Embedded systems needing programmable reset timing for stable microcontroller initialization.
• Battery-powered equipment utilizing precise voltage threshold monitoring for low-power states.

Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence or last-time-buy status. Confirm exact ordering suffixes and packaging types against official datasheets prior to procurement. Ensure compatibility with existing PCB footprints and verify that the VSOF5 package dimensions align with assembly requirements. Cross-reference replacement options if availability is constrained.

Selection Notes

Select this component when a CMOS output interface and externally adjustable reset delay are required. Compare performance metrics such as quiescent current and hysteresis against alternative supervisors. Ensure the 2.9 V threshold matches the target system's minimum operating voltage. Verify that the VSOF5 package fits within the designated board area and thermal constraints.

Part Context

This device belongs to the BD53xx series of voltage detectors, which are characterized by low power consumption and flexible configuration options. The series supports various detection voltages and output types, catering to diverse industrial and consumer electronics needs. The BD5329FVE-TR specifically addresses applications requiring a 2.9 V threshold with adjustable timing delays.

Replacement Considerations

The BD5229G-1 is identified as a recommended replacement with the same pinout. Note that the BD5229G-1 uses an SSOP5 package instead of VSOF5 and features an open-drain output rather than CMOS. Verify mechanical fit and electrical compatibility before substitution.