BU4341G-TR

Overview

The BU4341G-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It operates within a supply voltage range of 0.8 V to 7 V and features an adjustable detection threshold voltage between 0.9 V and 5.0 V with a resolution of 0.1 V. The device provides a reset signal with an active-low output type and includes an adjustable delay timer ranging from 0 ms to 200 ms. It exhibits high accuracy with a detection voltage tolerance of ±1% or ±5 mV. The component supports a manual reset function and operates across a temperature range of -40°C to +125°C.

Feature Summary

• CMOS process technology ensures ultra-low current consumption for extended battery life in portable applications.
• Adjustable detection threshold voltage allows precise customization of the under-voltage trip point.
• Integrated adjustable delay timer prevents false resets caused by transient noise during power-up.
• Manual reset pin enables external control over the reset state for system initialization.

Applications

• Portable electronic devices requiring efficient power management
• Battery-operated equipment needing reliable under-voltage protection
• Microcontroller systems requiring stable power-on reset sequences
• Industrial control units operating in varying temperature environments

Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement, as ordering codes may differ slightly from standard part numbers. Confirm availability status, as this component may be subject to lifecycle changes such as Not Recommended for New Designs (NRND). Ensure that the selected version meets the required thermal and electrical specifications for your application environment.

Selection Notes

Select the BU4341G-TR when a customizable voltage threshold and delay timer are required for system supervision. Consider its low quiescent current for battery-powered designs. Evaluate the need for manual reset functionality versus automatic operation. Compare performance metrics against newer alternatives if long-term supply stability is a critical factor for the product lifecycle.

Part Context

This component belongs to ROHM's BU43xx series of voltage detectors, which are widely used for power supply monitoring. The series is characterized by its flexibility in setting detection voltages and delays. The BU4341G-TR specifically offers a broad adjustment range, making it suitable for diverse voltage rails in complex electronic systems where standard fixed-threshold detectors are insufficient.

Replacement Considerations

The BD5241G-1TR is a recommended replacement with similar pinout and package configuration. Verify compatibility regarding detection voltage ranges and output characteristics before substitution. Ensure that the alternative component meets all environmental and electrical requirements of the original design.

FAQ

What is the resolution of the adjustable detection voltage?

The detection voltage can be adjusted with a resolution of 0.1 V.

Does the BU4341G-TR include a watchdog timer?

No, this specific model does not include a built-in watchdog timer.

What is the maximum operating temperature for this device?

The maximum operating temperature is +125°C.