The R5426N119FA-TR is a voltage detector IC manufactured by Ricoh. It's a highly precise and low-power consumption voltage detector, typically used for monitoring voltage levels in various electronic devices. These detectors are designed to trigger a reset signal when the monitored voltage drops below a certain threshold, safeguarding the system from undervoltage conditions.

Applications

• Microcontroller reset circuits: Ensuring proper microcontroller operation by resetting it during voltage drops.
• Power management circuits: Monitoring battery voltage levels in portable devices.
• Voltage monitoring in industrial equipment: Protecting sensitive electronic components from damage due to power supply fluctuations.
• Backup power systems: Detecting the switchover from main power to backup power.
• Consumer electronics: Used in a wide range of consumer products like smartphones, tablets, and digital cameras for power management and protection.

Features

• High-precision detection voltage: Ensures accurate voltage monitoring and reset triggering.
• Low power consumption: Extends battery life in portable devices.
• Small package size: Suitable for space-constrained applications.
• Built-in hysteresis: Prevents chattering during voltage fluctuations around the threshold voltage.
• Open drain output: Offers flexibility in connecting to various logic circuits.

Benefits

• Protects against data corruption: Resets the microcontroller before it enters an unstable state due to low voltage, preventing data loss.
• Ensures system stability: Guarantees reliable operation by resetting the system in case of power supply irregularities.
• Extends battery life: Low power consumption contributes to longer battery life in portable applications.
• Reduces system complexity: Simplifies circuit design with integrated voltage detection functionality.
• Enhances system reliability: Provides a robust and reliable voltage monitoring solution.

Additional Details

The R5426N119FA-TR features a detection voltage of 1.9V. It typically comes in a small SOT-23 or similar surface-mount package. The hysteresis voltage helps prevent unwanted resets due to noise or minor voltage variations. The open-drain output allows for easy integration with other components and facilitates the creation of wired-OR logic. Its low supply current makes it ideal for battery-powered devices where power conservation is critical. It is designed to operate over a wide temperature range.