BU4222FVE-TR

Overview

The BU4222FVE-TR is a voltage detector IC manufactured by Rohm Semiconductor, designed for monitoring power supply levels with an adjustable delay timer. It features an open-drain output and operates within a reset active voltage range of 0.7V to 7V. The typical under-voltage detection threshold is 2.2V with a precision of ±1%. The device consumes 0.40μA in the ON state and 0.55μA in the OFF state at VDET=4.8V. It supports a manual reset function and includes a watchdog timer. The component is housed in a VSOF5 package and complies with RoHS standards.

Feature Summary

• Adjustable delay timer functionality for customized reset timing
• Open-drain output type compatible with various logic levels
• Manual reset capability for system control flexibility
• Integrated watchdog timer for enhanced reliability

Applications

• Power supply supervision in embedded systems
• Microcontroller reset circuit protection
• Battery-operated device voltage monitoring
• Industrial control system power integrity checks

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet to ensure compatibility with your design requirements. Confirm the current supply status as this component may be subject to end-of-life notices or last-time buy conditions. Check for RoHS compliance documentation if required for your manufacturing process. Ensure that the replacement part BD5222G-1 meets all electrical specifications before substitution.

Selection Notes

Select this component when an adjustable delay timer and manual reset are required for voltage supervision. Consider the open-drain output configuration for interfacing with different logic families. Evaluate the low standby current consumption for battery-powered applications. Verify that the operating temperature range and package size fit your board layout constraints. Compare performance metrics with alternative parts like the BD5222G-1 series for potential upgrades.

Part Context

The BU4222FVE-TR belongs to Rohm's voltage detector family, offering precise under-voltage detection with adjustable timing features. It is designed for reliable operation in various electronic applications requiring power management supervision. The component provides a compact solution for monitoring power rails and ensuring system stability through configurable reset parameters.

Replacement Considerations

The BD5222G-1 is listed as a recommended replacement with the same pinout. Verify electrical parameter alignment before substitution.