The S-80720SN is a voltage detector IC designed and manufactured by SII Semiconductor Corporation. It's specifically designed to monitor the input voltage and generate a reset signal when the voltage falls below a predetermined threshold. This ensures the proper functioning of microcontrollers, CPUs, and other voltage-sensitive devices.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• Power supply monitoring in embedded systems
• Battery voltage monitoring in portable devices
• Overvoltage/Undervoltage protection circuits

Features

• High-precision detection voltage
• Low current consumption
• Built-in hysteresis
• Small package size (SOT-23-5)
• Wide operating temperature range

Benefits

• Ensures reliable microcontroller operation by preventing erroneous code execution during voltage drops.
• Extends battery life in portable devices due to minimal current draw.
• Prevents oscillation of the reset signal near the threshold voltage, ensuring clean reset behavior.
• Easy integration into space-constrained applications due to its compact size.
• Suitable for use in a variety of environments due to its wide operating temperature range.

Detailed Specifications

The S-80720SN has a detection voltage of 2.0V. The ultra-low current consumption is a key feature for battery-powered devices, minimizing the load on the power source. The built-in hysteresis prevents the output from oscillating when the input voltage is near the detection threshold. The SOT-23-5 package allows for easy integration into compact electronic devices. The operating temperature range is typically from -40°C to +85°C. The output is an N-channel open drain output.

The primary function of the voltage detector is to protect the system from malfunctions or data corruption that could occur if the supply voltage drops below the minimum required level for proper operation. The precise detection voltage ensures that the reset signal is generated only when necessary, preventing unnecessary system resets.