BD5331G-TR

Overview

The BD5331G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for supervisory circuits in microcontroller and logic applications. It features a fixed detection threshold of 3.1V with ±1% accuracy. The device operates within a supply voltage range of 0.95V to 10V and consumes ultra-low current, typically 0.85µA. It includes an adjustable reset delay timer controlled by an external capacitor and provides a low-active CMOS output. The component is housed in a compact SSOP-5 package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output type providing push-pull drive capability
• Adjustable reset delay time via external capacitor connection
• Ultra-low current consumption for extended battery life
• High-accuracy voltage detection with ±1% precision

Applications

• Reset generation for microcontroller systems
• Logic circuit power supervision
• Battery-powered device monitoring
• Voltage level detection in portable electronics

Procurement Notes

Verify the specific lot date code and RoHS compliance status upon order confirmation, as this component may be subject to end-of-life restrictions or limited availability depending on regional distribution channels. Ensure that the SSOP-5 package dimensions align with your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select the BD5331G-TR when a fixed 3.1V threshold with high precision is required alongside adjustable timing delays. Compare against the BD5231G-1 if an open-drain output or different supply range is preferred. Consider the CMOS output structure for direct logic interfacing needs without additional pull-up components.

Part Context

This part belongs to the BD53xx series of free delay time setting CMOS voltage detector ICs. It complements the BD52xx series, which offers N-channel open-drain outputs. Both series share similar low-current characteristics and package options, catering to diverse supervisory circuit design requirements across consumer and industrial electronics.

Replacement Considerations

The BD5231G-1 is documented as a recommended replacement with the same pinout and package. Verify electrical parameter compatibility, particularly the output type difference (CMOS vs. Open Drain) and supply voltage ranges, to ensure functional equivalence in existing designs.