The S-8051ANB-NA-T1 is a voltage detector IC manufactured by SII Semiconductor Corporation. It's designed to monitor the supply voltage of electronic devices and generate a reset signal when the voltage falls below a specified threshold. This ensures that the system is properly initialized or shut down to prevent data corruption or malfunction. This device is particularly useful in battery-powered devices and systems where power supply fluctuations are common.

Applications

• Microcontroller Reset Circuits: Provides a reliable reset signal for microcontrollers during power-up, power-down, or brownout conditions.
• Power Supply Monitoring: Monitors power supply voltages to detect undervoltage conditions and prevent damage to connected devices.
• Battery-Powered Devices: Protects batteries from deep discharge by shutting down the device when the battery voltage drops too low.
• Industrial Control Systems: Ensures safe operation by detecting voltage fluctuations and triggering appropriate responses.
• Consumer Electronics: Used in smartphones, tablets, and other devices to prevent data loss and ensure stable operation.

Features

• High-Precision Voltage Detection: Accurate voltage detection with minimal tolerance.
• Ultra-Low Current Consumption: Minimizes power consumption, extending battery life in portable devices.
• Small Package Size: Available in compact packages like SOT-23 to save space on circuit boards.
• Built-in Hysteresis: Prevents oscillations and ensures reliable reset operation by providing a difference between the rising and falling threshold voltages.
• Open Drain Output: Offers flexibility in connecting to various microcontroller and other digital circuits.

Benefits

• Improved System Reliability: Prevents system malfunctions caused by voltage drops or fluctuations.
• Extended Battery Life: Low current consumption contributes to longer battery life in portable devices.
• Simplified Circuit Design: Reduces the number of external components required for voltage monitoring.
• Data Protection: Resets the microcontroller before data corruption can occur during voltage drops.
• Stable Operation: Ensures stable and reliable operation, even in environments with fluctuating power supplies.

The S-8051ANB-NA-T1 typically has a detection voltage around 5.1V. The exact detection voltage is specified in the datasheet. The device typically consumes very little current, often in the order of a few microamperes. It comes in a small SOT-23 package. The operating temperature ranges from -40°C to +85°C, allowing for use in a variety of applications. The output is an N-channel open drain. It is RoHS compliant. Hysteresis is typically around 0.2V. The pull-up resistor value must be chosen appropriately based on the application requirements. It provides essential voltage supervision to maintain the integrity and reliability of electronic systems.