BD4933G-TR

Overview

The BD4933G-TR is a CMOS voltage detector IC from the BD49 series, manufactured by ROHM Semiconductor. It features a fixed threshold detection voltage of 3.3 V with a precision accuracy of ±1%. The device operates within a supply voltage range of 0.95 V to 10 V and provides a CMOS output type. Key electrical parameters include a reset delay time of 100 µs, a maximum power dissipation of 540 mW, and an operating temperature range from -40 °C to +105 °C. It is housed in an SSOP-5 package.

Feature Summary

• CMOS output interface for direct logic compatibility
• High detection accuracy with ±1% threshold precision
• Wide operating supply voltage range up to 10 V

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Portable equipment power management

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and check current lifecycle status as the part may be discontinued or not recommended for new designs. Ensure packaging specifications match project requirements before procurement.

Selection Notes

Select this component when a precise 3.3 V detection threshold is required for single-input monitoring applications. Consider the SSOP-5 package size and CMOS output characteristics for integration into low-power digital systems. Evaluate thermal performance against the 540 mW power dissipation limit in the target environment.

Part Context

This component belongs to the BD49 series of standard voltage detectors designed for high-accuracy power supervision. The series offers various detection voltages with CMOS outputs, targeting applications requiring reliable reset signals for microprocessors and memory devices in consumer and industrial electronics.

Replacement Considerations

BD5233G-1 is listed as a similar level replacement with the same SSOP-5 package. Verify parameter equivalence including threshold voltage and output type before substitution.