M51945BFP#DF1J

Supervisors Overview

The M51945BFP#DF1J is a single-function voltage detector and system reset IC manufactured by Renesas Electronics. It monitors supply voltage levels to ensure reliable operation of digital circuits. The device provides a reset signal output when the input voltage drops below a specific threshold, preventing malfunction due to under-voltage conditions. Designed for robust performance in embedded systems, it operates within a supply voltage range of 2.7V to 3.6V. The component is available in compact packages suitable for space-constrained applications.

Supervisors Feature Summary

• Provides continuous monitoring of supply voltage to detect under-voltage events
• Generates a clean reset signal to maintain system integrity during power fluctuations
• Single-function design simplifies integration into microcontroller-based systems

Supervisors Applications

• Microcontroller system reset protection
• Embedded system power management
• Industrial control circuit supervision

Supervisors Procurement Notes

Verify the exact suffix DF1J against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the target board's voltage domain and reset timing requirements. Cross-reference the part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required for your manufacturing process.

Supervisors Selection Notes

Select this component when a simple, dedicated voltage supervisor is needed rather than a complex PMIC. It is suitable for applications requiring a fixed reset threshold without programmable delays. Consider the package size and pin configuration relative to the PCB layout constraints. Evaluate the operating temperature range to ensure reliability in the intended environment.

Supervisors Part Context

This part belongs to Renesas' family of single-function reset ICs, which focus on bipolar products capable of handling various supply voltages. These devices are designed to provide reliable system reset signals, ensuring that connected logic remains in a known state during power-up and power-down sequences. They complement more complex power management solutions by offering a cost-effective supervision method.

Supervisors Replacement Considerations

Check for direct cross-references from other manufacturers such as STMicroelectronics or Texas Instruments offering similar single-supply voltage detectors. Verify that any substitute matches the reset threshold voltage and output polarity. Ensure the alternative component supports the same supply voltage range and package footprint to minimize redesign efforts.