BD5259G-TR

Overview

The BD5259G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply levels in electronic circuits. It features an adjustable delay timer and operates within a reset active voltage range of 0.95V to 10V. The typical under-voltage detection threshold is 5.9V with a precision of ±1%. The device utilizes an open-drain output type and maintains a low circuit current consumption of 0.85μA at VDET=4.8V. It supports a maximum supply voltage of 10V and functions across a temperature range of -40°C to +105°C.

Feature Summary

• Adjustable delay timer functionality allows customization of reset timing without external capacitors.
• High accuracy voltage detection with ±1% precision ensures reliable system supervision.
• Low power consumption design suitable for battery-operated applications.

Applications

• Power supply monitoring in industrial equipment
• System reset generation in embedded controllers
• Voltage supervision in portable electronic devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for Last Time Buy notices as the part may be discontinued. Ensure ordering suffix matches required packaging specifications. Validate datasheet revisions against current engineering requirements before final procurement decisions.

Selection Notes

Select this component when an adjustable delay timer is required alongside high-precision voltage detection. Consider the open-drain output configuration for compatibility with various logic families. Evaluate the wide operating voltage range and temperature stability for harsh environment applications. Compare current consumption metrics against alternative supervisory ICs for optimal power efficiency.

Part Context

This component belongs to the BD52 series of CMOS voltage detectors from ROHM Semiconductor. These ICs utilize advanced CMOS processes to achieve low current consumption and high accuracy. The series offers various detection voltages and output types to meet diverse application needs. The BD5259G specifically provides adjustable delay capabilities within a compact SSOP5 package.

Replacement Considerations

BD5250G-1 is listed as a recommended replacement with the same pinout and package. Note that the BD5250G-1 has a different detection voltage (5.0V vs 5.9V) and slightly higher precision (±0.9%). Verify electrical parameter compatibility before substitution.