BD4722G-TR

Overview

The BD4722G-TR is a standard voltage detector manufactured by Rohm Semiconductor, designed for monitoring single-channel power supply voltages. It operates within a supply voltage range of 0.85 V to 10 V and features a fixed detection threshold of 2.2 V with ±1% accuracy. The device utilizes an open-collector output type and provides a low-active reset signal without manual reset or watchdog timer capabilities. It is housed in a compact 5-pin SSOP (SC-74A) package and supports surface-mount installation. The component functions reliably across an operating temperature range of -40°C to +75°C.

Feature Summary

• Monitors a single input voltage channel against a fixed threshold
• Provides active-low reset signal via open-collector output
• Operates within a wide supply voltage range up to 10 V
• Ensures high detection accuracy with minimal static current consumption

Applications

• Portable electronic devices requiring battery voltage supervision
• Embedded systems needing microprocessor reset generation
• Industrial control circuits monitoring power integrity
• Consumer electronics with limited space constraints

Procurement Notes

Verify the obsolete status of this part number before procurement planning. Confirm availability through authorized distributors or surplus suppliers. Ensure compatibility with replacement components such as the BD5222G-1TR if redesigning. Check RoHS compliance documentation for regulatory adherence. Validate package dimensions and pinout alignment during integration.

Selection Notes

Select this component when a fixed 2.2 V threshold is required for single-channel monitoring. Consider the open-collector output interface for compatibility with various logic levels. Evaluate the SSOP-5 package size for space-constrained designs. Assess the operating temperature range against environmental conditions. Compare static current consumption with alternative detectors for power efficiency.

Part Context

This component belongs to the BD47xx series of standard voltage detectors from Rohm Semiconductor. It shares the same SSOP-5 package form factor with other members of the family but differs in detection thresholds. The series is designed for general-purpose power supply monitoring applications. Similar parts include variants with different voltage thresholds within the same package style.

Replacement Considerations

The BD5222G-1TR is listed as a similar level replacement with the same SSOP-5 package. Verify electrical parameter differences, particularly regarding output drive capability and delay timers. Confirm that the replacement meets all functional requirements of the original design.