BU4213G-TR

Overview

The BU4213G-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features a fixed threshold voltage of 1.3 V with an accuracy of ±1%. The device operates within a supply voltage range of 0.7 V to 7 V and offers an open-drain output type with low-active reset functionality. Reset delay time is adjustable or selectable, providing flexibility in system timing. It supports surface mount installation in a 5-SSOP package and functions reliably across a wide temperature range from -40°C to +125°C.

Feature Summary

• Monitors a single input voltage channel with a fixed 1.3 V detection threshold.
• Provides low-active reset signal via open-drain output interface.
• Features adjustable or selectable reset delay timer for flexible timing control.
• Operates within extended industrial temperature range up to 125°C.

Applications

• Monitoring battery voltage levels in portable electronic devices
• Supervising microprocessor power supply rails for system stability
• Detecting under-voltage conditions in embedded control systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific environmental certifications required by your region. Ensure the ordering suffix matches the reel packaging specification if automated assembly is planned. Validate that the part number corresponds to the exact threshold voltage and package variant needed for your design.

Selection Notes

Select this component when a fixed 1.3 V threshold is required for single-channel supervision. Consider the open-drain output compatibility with your system logic levels. Evaluate the adjustable delay feature against your startup time requirements. Verify that the 5-SSOP package fits your PCB layout constraints and thermal management needs.

Part Context

This part belongs to the BU42xxG series of voltage detectors from ROHM. It is positioned as a simple supervisor circuit without manual reset or watchdog capabilities. The series targets cost-sensitive applications requiring reliable power monitoring in compact surface-mount packages.

Replacement Considerations

Public confirmed substitute: BD5213G-1TR. This alternative shares similar pinout and function but may differ in automotive qualification status and specific electrical characteristics such as current consumption.