The S-80739AN-D3-T1 is a voltage detector IC from SII Semiconductor Corporation. It's designed to monitor voltage levels and provide a reset signal when the voltage drops below a pre-set threshold. This prevents erratic behavior and potential damage to electronic circuits caused by undervoltage conditions.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• Power management systems
• Battery-powered devices
• Industrial control equipment

Features

• Detection voltage: 3.9V (fixed)
• High accuracy: ±2.0%
• Low current consumption: 0.8 μA (TYP.)
• Operating voltage range: 0.65 V to 10.0 V
• Output type: N-channel open-drain
• Package: SOT-23-5
• Operating temperature: -40°C to +85°C
• Hysteresis: 5% (TYP.)

Benefits

• Ensures stable and reliable system operation by preventing malfunctions due to low voltage.
• Extends battery life in portable devices due to the IC's low power consumption.
• Provides accurate voltage monitoring with its high-precision detection voltage.
• Offers a simple and effective reset function for microcontrollers and CPUs.
• Saves valuable board space thanks to the compact SOT-23-5 package.
• Provides reliable performance over a wide range of operating temperatures.

Additional Details

The S-80739AN-D3-T1 incorporates hysteresis to prevent oscillations or false triggering around the threshold voltage. The open-drain output allows for easy interfacing with various logic levels. It's designed for use in applications where precise and reliable voltage monitoring is critical. The 3.9V detection voltage makes it appropriate for systems operating at 3.3V, where a timely reset is necessary when the supply dips.