BU4834F-TR

Supervisors Overview

The BU4834F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply lines. It features a fixed threshold voltage of 3.4 V with a precision of ±1%. The device operates within a supply voltage range of 0.7 V to 7 V and includes an open-drain output type. It consumes a typical operating current of 550 nA and offers hysteresis defined as VDET x 0.05. The component supports a wide operating temperature range from -40°C to +125°C and is housed in a compact SOP-4 package.

Supervisors Feature Summary

• CMOS technology ensures ultra-low power consumption suitable for battery-operated applications.
• Fixed detection voltage provides reliable system reset without external adjustment components.
• Integrated hysteresis prevents output oscillation during slow-rising input voltages.

Supervisors Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing precise power management
• General-purpose industrial control systems

Supervisors Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check current lifecycle status as distribution availability may vary by region. Ensure the SOP-4 footprint matches the target PCB layout constraints.

Supervisors Selection Notes

Select this component for designs requiring a fixed 3.4 V threshold with high accuracy. Consider the open-drain output capability for interfacing with various logic levels. Evaluate the wide temperature range suitability for harsh environments. Compare against adjustable alternatives if variable thresholds are required later.

Supervisors Part Context

This part belongs to the BU4834 series of standard voltage detectors. It serves as a critical supervisory circuit element within power management architectures. The device complements other ROHM ICs by providing dedicated reset signal generation based on monitored rail stability.

Supervisors Replacement Considerations

BD5234G-1TR is listed as a recommended replacement with similar specifications. Verify package compatibility and electrical parameter alignment before substitution.