BU46L482G-TL

Supervisors Overview

The BU46L482G-TL is a voltage detector IC from ROHM Semiconductor, designed for monitoring power supply levels in electronic circuits. It features a fixed threshold voltage of 4.8 V and utilizes a CMOS output type. The device operates within a maximum supply voltage of 6 V and includes an internal reset delay timer of 200 ms, eliminating the need for external timing capacitors. It is housed in an SSOP-3 package with SMD/SMT mounting style. The component has no manual reset, watchdog timer, or battery backup switching functions. Accuracy is specified at 1%, and it operates across a temperature range of -40°C to +105°C.

Supervisors Feature Summary

• Built-in counter timer delay circuit removes requirement for external delay-setting capacitors
• CMOS output structure provides high noise immunity and low current consumption
• Fixed threshold voltage detection ensures precise power supply monitoring without adjustment

Supervisors Applications

• Portable equipment requiring low current consumption voltage supervision
• Battery-powered devices needing reliable under-voltage detection
• General-purpose electronic systems utilizing standard CMOS logic interfaces

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or official ROHM channels due to end-of-life status. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any historical updates affecting electrical characteristics. Ensure storage conditions comply with moisture sensitivity level requirements before reflow soldering.

Supervisors Selection Notes

Select this part when a fixed 4.8 V detection threshold with CMOS output is required. Consider the 200 ms internal delay for system reset timing compatibility. Evaluate the SSOP-3 footprint against available PCB space. Compare quiescent current specifications if ultra-low power operation is critical for the application design.

Supervisors Part Context

This component belongs to the BU45/BU46 series of voltage detectors known for high accuracy and low current consumption. The series integrates delay timers internally, simplifying circuit design by removing external passive components. The BU46L482G-TL specifically offers CMOS output, distinguishing it from open-drain variants within the same family.

Supervisors Replacement Considerations

BD5248G-1TR is listed as a similar specification replacement. Note differences in package (SSOP5 vs SSOP3) and output type (Open drain vs CMOS). Verify pinout compatibility and electrical parameter alignment before substitution.