BU4233F-TR

Overview

The BU4233F-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features a typical under-voltage detection voltage of 3.3V and a VDET precision of ±1%. The reset active voltage range spans from 0.7V to 7V, utilizing an open drain output type. The device incorporates an adjustable delay timer and maintains a low reset active state. Circuit current consumption is specified at 0.40μA (ON) and 0.55μA (OFF) when VDET is set to 4.8V. Hysteresis voltage is defined as VDET multiplied by 0.05. The L output current capabilities are 3.3mA for low voltage and 6.5mA for high voltage conditions. The component operates within a temperature range of -40°C to 125°C.

Feature Summary

• Features an adjustable delay timer for customizable reset timing.
• Provides precise under-voltage detection with ±1% accuracy.
• Utilizes an open-drain output structure for flexible interfacing.

Applications

• Power supply supervision in electronic systems
• Microcontroller reset circuit generation
• Low voltage monitoring in portable devices

Procurement Notes

Verify the specific ordering suffix and package configuration against official documentation before procurement. Confirm that the component status aligns with project requirements, noting potential availability constraints. Ensure compatibility with existing design parameters regarding voltage thresholds and output characteristics. Cross-reference technical specifications to guarantee functional equivalence in the intended application environment.

Selection Notes

Select this component based on the required detection voltage threshold and the need for an adjustable delay function. Consider the open-drain output capability for system integration flexibility. Evaluate the operating temperature range to ensure suitability for the environmental conditions. Assess power consumption metrics relative to battery life or thermal management constraints in the target application.

Part Context

The BU4233F-TR belongs to the BU42 series of voltage detectors from ROHM Semiconductor. This series is designed for supervisory applications requiring reliable under-voltage detection. The device is part of a broader family of power management ICs focused on system protection and reset generation. Its specifications align with standard CMOS low-voltage detector requirements for consumer and industrial electronics.

Replacement Considerations

The BD5233G-1 is identified as a replacement option with the same pinout. Verify package differences, as the BU4233F uses SOP4 while the BD5233G uses SSOP5. Check parameter variations such as reset active voltage range and output current capabilities to ensure functional compatibility.