The RN5VL39CA-TR is a voltage detector IC manufactured by Ricoh Electronic Devices Co., LTD. This device monitors the input voltage and outputs a reset signal when the voltage drops below a specific threshold, safeguarding electronic systems against malfunctions and data corruption due to undervoltage conditions.

Applications

• Microcontroller Reset: Provides a reliable reset signal to microcontrollers during power-up or voltage drops, preventing erratic behavior and ensuring proper initialization.
• CPU Reset: Resets CPUs in electronic devices when the supply voltage falls below a safe operating level.
• Power Supply Monitoring: Continuously monitors the output voltage of power supplies to ensure stability and reliable operation of connected circuits.
• Battery-Powered Devices: Detects low battery voltage and prevents deep discharge, thereby extending battery life and preventing potential damage to the battery.
• Data Protection: Protects data integrity in memory devices by initiating a reset during voltage drops, preventing data corruption or loss.

Features

• High-Accuracy Detection Voltage: Offers precise voltage monitoring with minimal deviation from the specified detection threshold. The detection voltage is typically 3.9V with very low tolerance.
• Ultra-Low Current Consumption: Minimizes power drain, making it ideally suited for battery-powered applications where power efficiency is paramount. The typical current consumption is extremely low, typically in the microampere range.
• Built-in Hysteresis: Prevents output oscillation near the detection threshold, ensuring a stable and reliable reset signal.
• Open Drain Output: Offers a flexible output that can be easily interfaced with microcontrollers and a variety of other logic circuits.
• Compact Package: Available in a small SOT-23 or similar package, which saves valuable board space in densely populated electronic designs.

Benefits

• Improved System Reliability: Prevents system malfunctions and errors caused by voltage fluctuations and undervoltage scenarios.
• Data Integrity Protection: Ensures the integrity of data by resetting the system during voltage drops, preventing data corruption and potential data loss.
• Extended Battery Life: The ultra-low current consumption contributes significantly to extending the battery life in portable and battery-powered devices.
• Simplified Circuit Design: Integrates all the necessary components for voltage detection into a single compact package, reducing component count and streamlining the overall circuit design process.
• Cost-Effective Solution: Offers a reliable and affordable voltage detection solution for a broad range of electronic applications.

Technical Specifications: The RN5VL39CA-TR has a typical detection voltage of approximately 3.9V. The supply voltage range typically spans from 1.5V to 5.5V. Its operating temperature range is generally between -40°C and +85°C. The output is an N-channel open drain, necessitating an external pull-up resistor. Comprehensive timing characteristics, including the reset delay time, are detailed in the datasheet to facilitate seamless system integration. This component is typically RoHS compliant.