BU46L452G-TL

Supervisors Overview

The BU46L452G-TL is a voltage detector IC from the ROHM BU46 series, designed for monitoring single-input power supplies. It features a CMOS output type and operates within a supply voltage range up to 6 V. The device detects under-voltage conditions with a typical threshold of 4.5 V and maintains an accuracy of ±1%. It incorporates a built-in counter timer delay circuit that provides a fixed reset delay time of 200 ms, eliminating the need for external capacitors. The component functions without manual reset or watchdog timer capabilities. It is housed in an SSOP-3 package and supports surface mount installation.

Supervisors Feature Summary

• Built-in counter timer delay circuit eliminates the requirement for external timing capacitors
• CMOS output interface suitable for direct logic integration
• High detection accuracy with ±1% precision on the threshold voltage
• Low current consumption design optimized for battery-powered applications

Supervisors Applications

• Portable electronic devices requiring precise power supply monitoring
• Battery-operated equipment needing low quiescent current supervision
• Embedded systems utilizing single-input voltage regulation
• Consumer electronics with limited board space constraints

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part status is obsolete. Confirm package integrity and pin alignment against the SSOP-3 specification before integration. Check for moisture sensitivity handling requirements during storage and reflow processes. Ensure compatibility with existing PCB footprints and soldering profiles. Validate electrical parameters against original datasheet specifications to prevent functional mismatches in legacy designs.

Supervisors Selection Notes

Select this component when a fixed 200 ms delay and CMOS output are required for a 4.5 V threshold application. Consider alternative BU46 series variants if different delay times or open-drain outputs are needed. Evaluate the SSOP-3 package size against available board real estate. Compare operating temperature ranges and current consumption metrics with other supervisory circuits to ensure optimal system efficiency and reliability under specific environmental conditions.

Supervisors Part Context

This voltage detector belongs to the BU45/BU46 series of highly accurate, low-current consumption ICs. The series distinguishes itself by integrating internal delay timers, simplifying circuit design by removing external passive components. The BU46 variant specifically utilizes a CMOS output structure, differing from the open-drain configurations found in the BU45 series. This family targets compact, cost-sensitive applications where space and power efficiency are critical design constraints.

Supervisors Replacement Considerations

The BU45L462G is listed as a similar specification replacement with an open-drain output and adjustable delay. Verify output stage compatibility when substituting CMOS with open-drain types. Check if the target application requires the fixed 200 ms delay or can accommodate adjustable timing. Confirm package footprint differences between SSOP-3 variants to ensure mechanical fit.