BU45L304G-TL

Overview

The BU45L304G-TL is a voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features a threshold voltage of 3.0 V with an over-voltage detection level at 3.03 V. The device provides a reset delay time of 400 ms and operates within a maximum supply voltage of 6 V. It consumes a typical operating current of 2.8 uA and maintains accuracy within 1%. The component supports an open-drain output type and functions across a temperature range of -40 C to +105 C.

Feature Summary

• Built-in counter timer delay circuit eliminates the need for external capacitors for delay setting.
• Highly accurate voltage detection with 1% precision threshold levels.
• Low current consumption design suitable for battery-powered applications.

Applications

• Monitoring microprocessor power supplies
• Battery voltage supervision in portable devices
• Reset signal generation for digital circuits

Procurement Notes

Verify the exact part number as official documentation primarily lists the BU45K304G-TL variant with identical electrical specifications but potentially different internal configurations or suffix meanings. Confirm availability status, as similar series parts are marked NRND. Ensure compatibility with SSOP-3 packaging requirements and check for moisture sensitivity handling instructions prior to assembly.

Selection Notes

Select this component when a fixed 3.0 V threshold with open-drain output is required. Compare against BU45K304G-TL for potential pinout or functional differences despite similar ratings. Consider the 400 ms delay requirement and 6 V max input limit. Evaluate thermal performance within the specified -40 C to +105 C range for the target environment.

Part Context

This part belongs to the BU45/BU46 series of voltage detectors from ROHM Semiconductor. These ICs are characterized by high accuracy and low power consumption. The series typically includes variants with different threshold voltages and output types (CMOS or Open Drain). The BU45L304G-TL specifically utilizes the L-series designation, often indicating specific threshold tolerances or package variations within the broader family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The BU45K304G-TL shares similar electrical parameters but may differ in specific suffix definitions; verify datasheet equivalence before substitution.