The S-802740AL-A4-T1 is a voltage detector manufactured by SII Semiconductor Corporation. It's designed to monitor voltage levels in electronic circuits and provide a reset signal when the voltage drops below a certain threshold. This functionality is crucial for preventing malfunctions and ensuring stable operation of microcontrollers and other sensitive electronic components.

Applications

  
• Microcontroller reset circuits: Used to reliably reset microcontrollers during power-up or brown-out conditions.
  
• Power supply monitoring: Detects undervoltage conditions in power supplies to prevent damage to connected devices.
  
• Battery-powered devices: Monitors battery voltage to prevent deep discharge and extend battery life.
  
• Industrial control systems: Provides a fail-safe mechanism in case of power fluctuations.
  
• Consumer electronics: Ensures stable operation of devices like smartphones, tablets, and other portable gadgets.

Features

  
• Low operating voltage: Operates with a low supply voltage, making it suitable for battery-powered applications.
  
• High accuracy detection voltage: Provides precise voltage detection with minimal deviation.
  
• Ultra-low current consumption: Minimizes power consumption, extending battery life in portable devices.
  
• Small package size: Available in small packages for space-constrained applications.
  
• Built-in hysteresis: Prevents oscillation and ensures reliable reset operation.

Benefits

  
• Improved system reliability: Prevents system malfunctions caused by voltage drops.
  
• Extended battery life: Low current consumption contributes to longer battery life in portable devices.
  
• Simplified circuit design: Reduces the number of components required for voltage monitoring.
  
• Protection against data corruption: Resets the microcontroller before data corruption can occur during voltage drops.
  
• Enhanced system stability: Provides stable and reliable operation, even under fluctuating voltage conditions.

The S-802740AL-A4-T1 features a detection voltage of 4.0V. It typically offers a ±2.0% detection voltage accuracy. Its ultra-low current consumption is typically in the range of a few microamperes.  The device is available in a SOT-23-3 package, making it suitable for high-density circuit boards. The operating temperature range is typically -40°C to +85°C, allowing it to function reliably in various environmental conditions. The output is an N-channel open drain output. The hysteresis width is typically 0.2V. The device is RoHS compliant, ensuring environmental friendliness.