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of Onsemi CAT811STBI-GT3 The CAT811STBI-GT3 is a voltage supervisor IC with an adjustable reset threshold. It is designed to monitor supply voltage and ensure that microcontrollers and other digital circuits reset correctly during power-up, power-down, or brown-out conditions. The device is characterized by low power consumption and a small package size, making it suitable for various portable applications. Functions 1. Voltage Monitoring: The CAT811 provides reset signals based on the supply voltage levels. 2. Adjustable Reset Threshold: Users can set the reset threshold to a desired value. 3. Low Power Consumption: The IC operates at low current, which is ideal for battery-powered devices. 4. Active Low or Active High Reset Output: Configurability in the output behavior based on design needs. 5. Overvoltage and Undervoltage Protection: Prevents operation of devices at unsafe voltage levels. Applications 1. Microcontroller Reset: Ensures that microcontrollers start operating only after the supply voltage is stable. 2. Consumer Electronics: Used in devices such as smartphones, appliances, and portable gadgets. 3. Automotive Systems: Monitoring supply voltages in automotive electronics to prevent incorrect operations. 4. Industrial Control Systems: Ensures reliability in the control systems within industrial equipment. Alternative Parts 1. MAX812: Another voltage supervisor IC with adjustable reset thresholds. 2. LM8611: Provides similar functionality with different pin configurations and threshold options. 3. S-80823AN: Low-voltage supervisor with a built-in delay feature for different applications. 4. TPS386000: Voltage supervisors from Texas Instruments with features tailored for power management. Embedded Modules There aren’t specific embedded modules directly tied to the CAT811 but many development boards and microcontroller kits can integrate a voltage supervisor like the CAT811 for testing and prototyping purposes. Related Q&A Q1: How can the reset threshold of the CAT811STBI-GT3 be adjusted? A1: The reset threshold can be adjusted by connecting external resistors to set the desired voltage level at which the reset signal activates. Q2: What are the main benefits of using voltage supervisor ICs like the CAT811? A2: They ensure reliable operation of microcontrollers, prevent glitches during power transitions, and protect sensitive components from operating under unstable voltage conditions. Q3: What package type is the CAT811STBI-GT3 available in? A3: The CAT811STBI-GT3 is available in a small SOT-23 package, which helps save space in PCB designs. Q4: Can the CAT811 be used in battery-powered applications? A4: Yes, the low power consumption feature of the CAT811 makes it suitable for battery-operated devices, ensuring minimal impact on battery life. Q5: How does the CAT811STBI-GT3 react during a brown-out condition? A5: During a brown-out condition, when the supply voltage falls below the reset threshold, the CAT811 activates the reset output to signal the microcontroller to reset or remain in a safe state until voltage stabilizes.