BD5227G-1TR

Overview

The BD5227G-1TR is a CMOS voltage detector IC from Rohm Semiconductor, designed for ultra-low current consumption applications. It features an adjustable delay timer controlled by an external capacitor and provides an N-channel open-drain output. The device detects under-voltage conditions with a typical threshold of 2.7V and offers high precision of ±0.9%. It operates within a reset active voltage range of 0.8V to 6V and supports a supply current as low as 0.23µA in the ON state. Packaged in SSOP5, it is suitable for portable devices requiring efficient power management.

Feature Summary

• Ultra-low current consumption utilizing CMOS process technology
• Adjustable delay time setting via external capacitor
• High detection voltage precision with ±0.9% accuracy
• N-channel open-drain output configuration

Applications

• Portable electronic devices requiring extended battery life
• Microprocessor system reset circuits
• Battery-powered instrumentation
• General-purpose voltage monitoring in consumer electronics

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific environmental certifications required by your region. Ensure the ordering part number matches the exact suffix requirements for tape-and-reel packaging. Validate that the supplier provides traceability documentation consistent with Rohm Semiconductor standards.

Selection Notes

Select this component when adjustable reset timing is required alongside minimal quiescent current. Compare against fixed-delay alternatives if timing flexibility is unnecessary. Consider the open-drain output capability for interfacing with various logic levels. Evaluate the operating temperature range suitability for the intended application environment before finalizing the design.

Part Context

This part belongs to Rohm's nano energy™ series of voltage detectors, emphasizing energy efficiency. It serves as a modern replacement for older models like the BU4927G-TR and BD5327G, offering improved precision and lower power consumption while maintaining compatibility with standard SSOP5 packages used in previous designs.

Replacement Considerations

The BD5227G-1TR is recommended as a direct replacement for obsolete parts such as the BU4927G-TR, BD5327G, and BD45271G. These substitutes share the same pinout and package type (SSOP5), facilitating easy integration into existing layouts without PCB redesign.