The R5426D124CA-FA is a voltage detector IC from Ricoh. This integrated circuit monitors voltage levels in electronic circuits. When the voltage drops below a certain threshold, it triggers a reset or other appropriate action. It is designed to enhance the stability and reliability of electronic devices, preventing errors caused by voltage fluctuations.

Applications

• Microcontroller Systems: Power supply monitoring and microcontroller reset during voltage drops to prevent crashes.
• Battery-Operated Equipment: Battery voltage monitoring to avoid deep discharge, extending battery life.
• Power Management: Under-voltage lockout (UVLO) for protection from operation at insufficient voltage.
• Real-Time Clocks (RTC): Guarantees RTC function even with short power loss.
• Memory Protection: Data backup initiation to secure volatile memory in case of voltage drop.

Features

• Low Power Consumption: Optimized for battery-powered devices.
• High Accuracy Voltage Detection: Ensures precision in voltage monitoring.
• Built-In Hysteresis: Minimizes oscillations at the threshold voltage.
• Compact Packaging: Designed for integration into smaller electronics.
• Open Drain Output: Provides flexible logic interface options.

Benefits

• Improved System Reliability: Minimizes errors associated with voltage drop issues.
• Increased Battery Longevity: Low power consumption leads to greater battery efficiency.
• Simplified Circuitry: Requires fewer external components.
• Better System Protection: Safeguards elements sensitive to low voltage scenarios.
• Affordable Solution: Provides reliable voltage monitoring at a good value.

Additional Details

The R5426D124CA-FA has specific voltage and temperature operating ranges, as described within the Ricoh datasheet. Typically, it is offered in a compact SOT-23 package for easier PCB implementation. The device has an open-drain N-channel MOSFET as its output, requiring a pull-up resistor connection to a voltage source. The detection voltage will be fixed, such as 1.24V, with some tolerance. Hysteresis helps prevent unstable behavior. The supply current draw is very low, usually microamperes, to save energy. This IC is vital for ensuring stable voltage, found in applications like portable devices and industrial controls.