MAX6831SFUT+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy, reset output, watchdog timer
• Package: SOT-23-6
• Essence: Monitors the power supply voltage and provides a reset signal to the microcontroller or other digital system when the voltage falls below a specified threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6831SFUT+T has six pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESET OUT) --| MR |-- Pin 3: Manual Reset Input (MR) --| WDI |-- Pin 4: Watchdog Timer Input (WDI) --| TH |-- Pin 5: Threshold Voltage Selection (TH) --| VCC |-- Pin 6: Power Supply (VCC) |___________| ```

Functional Features

1. Voltage Monitoring: The MAX6831SFUT+T continuously monitors the power supply voltage and generates a reset signal when it falls below the selected threshold voltage.
2. Reset Output: The device provides an active-low reset signal to the microcontroller or digital system, ensuring proper initialization after power-up or voltage drop.
3. Watchdog Timer: The integrated watchdog timer monitors the system's operation and generates a reset signal if it detects a fault or lock-up condition.
4. Manual Reset Input: The MR pin allows for manual resetting of the system, overriding the voltage monitoring and watchdog timer.

Advantages and Disadvantages

Advantages: - Low-power consumption - High accuracy in voltage monitoring - Small package size (SOT-23-6) - Wide operating temperature range

Disadvantages: - Limited threshold voltage options - Fixed reset timeout periods

Working Principles

The MAX6831SFUT+T operates by comparing the power supply voltage with the selected threshold voltage. When the voltage drops below the threshold, the device asserts the reset output, signaling the microcontroller or digital system to reset. The integrated watchdog timer ensures that the system remains responsive and generates a reset signal if it detects a fault or lock-up condition. The manual reset input allows for manual system reset, overriding the voltage monitoring and watchdog timer.

Detailed Application Field Plans

The MAX6831SFUT+T is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some potential application fields include:

1. Embedded Systems: Used in microcontroller-based systems, ensuring proper initialization and preventing data corruption during power fluctuations.
2. Industrial Automation: Provides voltage supervision and system reset capability in industrial control systems, ensuring uninterrupted operation.
3. Automotive Electronics: Monitors the vehicle's power supply voltage and triggers a reset when necessary, enhancing the reliability of automotive electronics.
4. Medical Devices: Ensures the safe operation of medical equipment by monitoring the power supply voltage and initiating a reset if needed.
5. Consumer Electronics: Used in devices such as smart home appliances, IoT devices, and wearable gadgets to maintain system integrity and prevent malfunctions.

Detailed and Complete Alternative Models

1. MAX6830SFUT+T: Similar to MAX6831SFUT+T but with different threshold voltage options.
2. MAX6832SFUT+T: Similar to MAX6831SFUT+T but with additional features like adjustable reset timeout period.
3. MAX6833SFUT+T: Voltage supervisor with integrated power-on reset and watchdog timer.
4. MAX6834SFUT+T: Dual-voltage supervisor with two independent voltage monitoring channels.

These alternative models offer similar functionality and can be considered based on specific application requirements.

Word count: 537 words