The S-80721SL-AJT1G is a voltage detector IC manufactured by SII Semiconductor Corporation. This IC is designed to monitor the voltage and provide a reset signal when it falls below a specific threshold. This function is crucial in ensuring the proper operation of microcontrollers and other electronic components by preventing erroneous behavior due to low voltage conditions.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• Power supply monitoring
• Battery voltage monitoring
• Overvoltage and undervoltage protection

Features

• High-precision voltage detection
• Low current consumption
• Hysteresis characteristics
• Small package size
• Wide operating temperature range

Benefits

• Prevents malfunctions in microcontrollers and CPUs caused by voltage drops.
• Extends battery life in portable devices due to low power consumption.
• Provides stable reset operations due to hysteresis, avoiding oscillations.
• Enables compact designs due to the small package size.
• Suitable for use in a wide range of environments due to the wide operating temperature range.

Detailed Specifications

The S-80721SL-AJT1G features a detection voltage of 2.1V. The IC consumes very little current during operation, making it suitable for battery-powered devices. The built-in hysteresis prevents the output signal from oscillating when the input voltage is near the detection threshold. It's available in a small SOT-23-5 package, which makes it easy to integrate into various applications. The operating temperature range extends from -40°C to +85°C. The output is typically an N-channel open drain output.

The precise voltage detection ensures that the system is reset only when necessary, preventing unnecessary interruptions. The low current consumption helps extend battery life, while the hysteresis ensures a clean and stable reset signal. The small package size makes it suitable for use in compact electronic devices.