BU46L342G-TL

Supervisors Overview

The BU46L342G-TL is a voltage detector IC from ROHM Semiconductor's BU45/BU46 series, designed for highly accurate monitoring with low current consumption. It features a built-in counter timer delay circuit, eliminating the need for external capacitors for delay time setting. The device operates within a supply voltage range of 0.6 V to 6 V and detects input voltages with a threshold of 3.4 V. It provides a CMOS output type with a reset delay time of 200 ms. The accuracy is specified at 1%, and it functions without manual reset or watchdog timer capabilities. Operating temperatures range from -40°C to +105°C, with a typical operating power supply current of 2.8 µA.

Supervisors Feature Summary

• Built-in counter timer delay circuit removes requirement for external delay-setting capacitors
• Highly accurate voltage detection with 1% precision threshold
• Low current consumption design suitable for battery-powered applications
• CMOS output interface compatible with standard digital logic

Supervisors Applications

• Battery voltage monitoring in portable electronic devices
• Power supply supervision in embedded systems
• Voltage level detection in microcontroller reset circuits
• Over-voltage or under-voltage protection in consumer electronics

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part status is obsolete. Confirm package integrity and moisture sensitivity handling requirements before installation. Check for RoHS compliance documentation if required by specific regulatory standards. Ensure replacement strategies are evaluated due to end-of-life status.

Supervisors Selection Notes

Select this component when fixed 200 ms reset delay and 3.4 V threshold are required. Consider CMOS output compatibility with target logic levels. Evaluate thermal performance within the -40°C to +105°C operating range. Assess current consumption constraints against system power budgets.

Supervisors Part Context

Part of the BU45/BU46 series of voltage detectors offering high accuracy and low power. Designed for compact SSOP-3 packaging with surface mount technology. Provides reliable supervision for single-input voltage monitoring applications without additional external timing components.

Supervisors Replacement Considerations

BD5234G-1 is listed as a similar specification replacement with adjustable delay and open-drain output.