BU45L302G-TL

Overview

The BU45L302G-TL is a ROHM Semiconductor voltage detector IC with a threshold of 3.0 V and open-drain output. It features a fixed reset delay of 200 ms, ±1% accuracy, and operates from -40°C to +105°C. Supply voltage ranges up to 6 V with typical current consumption of 2.8 µA. Packaged in SSOP-3, it monitors one input without manual reset or watchdog functions.

Feature Summary

• Built-in counter timer delay circuit eliminates the need for external capacitors for delay time setting.
• Highly accurate voltage detection with ±1% threshold precision ensures reliable system supervision.
• Low current consumption design supports battery-powered applications effectively.

Applications

• Portable electronic devices requiring low power monitoring
• Battery-operated equipment needing voltage supervision
• Embedded systems utilizing single-input voltage detection

Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm package integrity and moisture sensitivity handling requirements before assembly. Check RoHS compliance documentation for regulatory adherence. Validate replacement options if supply constraints persist.

Selection Notes

Choose this part for fixed-delay voltage monitoring needs. Consider SSOP-3 footprint compatibility. Evaluate operating temperature range suitability. Assess current consumption against system budget. Verify threshold voltage alignment with target supply levels.

Part Context

Part of the BU45/BU46 series offering high-accuracy voltage detection. Designed for compact SMD/SMT installations. Provides stable supervision without external timing components. Supports wide industrial temperature ranges for robust operation.

Replacement Considerations

BD5230G-1 is a recommended substitute with similar specifications. Note package difference (SSOP-5 vs SSOP-3) and adjustable delay feature. Verify pinout compatibility and electrical parameter matching before substitution.

FAQ

Does the BU45L302G-TL require an external capacitor for delay setting?

No, the built-in counter timer delay circuit makes external capacitors unnecessary.

What is the reset delay time for this voltage detector?

The reset delay time is fixed at 200 ms.