The R5402N120FC-TR-FE is a voltage detector manufactured by Ricoh. It's designed to monitor voltage levels within electronic circuits and trigger a reset or other action when the voltage falls below a specified threshold. This feature is crucial for protecting sensitive components from damage due to undervoltage conditions.

Applications

• Microcontroller-based systems: Ensuring proper operation of microcontrollers by resetting them during power dips.
• Battery-powered devices: Monitoring battery voltage to prevent deep discharge and extend battery life.
• Power supply monitoring: Detecting voltage drops in power supplies and triggering alarms or shutdown procedures.
• Automotive electronics: Monitoring critical voltage levels in automotive control systems.
• Industrial control systems: Ensuring stable operation of industrial equipment by monitoring power supply voltage.

Features

• High-accuracy voltage detection: Provides precise monitoring of voltage levels.
• Low current consumption: Minimizes power drain in battery-powered applications.
• Small package size: Suitable for space-constrained applications.
• Built-in hysteresis: Prevents oscillation during voltage transitions.
• Open drain output: Allows for flexible connection to various circuits.

Benefits

• Protects against undervoltage damage: Prevents components from operating under insufficient voltage conditions, ensuring reliability.
• Extends battery life: Prevents deep discharge of batteries, increasing their lifespan.
• Ensures system stability: Resets microcontrollers during power dips, preventing erratic behavior.
• Reduces system downtime: Detects and responds to voltage problems promptly, minimizing downtime.
• Improves system reliability: By protecting against voltage fluctuations, the overall reliability of the system is increased.

Additional Details

The R5402N120FC-TR-FE has a detection voltage of typically 1.2V. It features a built-in hysteresis of typically 50mV, preventing oscillations near the threshold voltage. The device operates over a wide temperature range, typically from -40°C to +85°C, making it suitable for use in various environments. The output is an N-channel open drain output, allowing for connection to different voltage levels. The supply voltage range is up to 5.5V. The package is a SOT-23-5 package.