MAX6419UK26+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a certain threshold.
  • Provides a reliable way to ensure proper operation of electronic systems by resetting them in case of power supply issues.
• Package: SOT23-5
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.6V, 3.08V, 4.63V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX6419UK26+T IC has the following pin configuration:

```

---

| | --|VCC |-- Pin 1: Power Supply Input --|GND |-- Pin 2: Ground --|MR |-- Pin 3: Manual Reset Input --|RST |-- Pin 4: Reset Output --|TH |-- Pin 5: Threshold Voltage Selection |____| ```

Functional Features

• Voltage Monitoring: The MAX6419UK26+T continuously monitors the input voltage and compares it with the selected threshold voltage.
• Reset Generation: When the input voltage falls below the threshold voltage, the IC generates a reset signal on the RST pin.
• Manual Reset: The IC provides a manual reset option through the MR pin, allowing external control over the reset function.
• Adjustable Timeout Period: The reset timeout period can be adjusted using an external capacitor connected to the TH pin.

Advantages and Disadvantages

Advantages: - Compact package size enables space-saving designs. - Wide supply voltage range allows compatibility with various systems. - Adjustable reset timeout period provides flexibility in system requirements.

Disadvantages: - Limited threshold voltage options may not cover all voltage monitoring needs. - Manual reset functionality may not be required in all applications.

Working Principles

The MAX6419UK26+T operates by comparing the input voltage with the selected threshold voltage. When the input voltage drops below the threshold, the IC generates a reset signal on the RST pin. The reset signal remains active until the input voltage rises above the threshold or a manual reset is triggered through the MR pin. The reset timeout period can be adjusted using an external capacitor connected to the TH pin.

Application Field Plans

The MAX6419UK26+T finds applications in various electronic systems where voltage monitoring and reset functionality are crucial for reliable operation. Some potential application fields include:

1. Microcontrollers: Ensuring proper system initialization and recovery after power supply disturbances.
2. Industrial Control Systems: Monitoring power supply integrity to prevent data loss or equipment damage.
3. Automotive Electronics: Resetting microcontrollers and other critical components during voltage fluctuations.
4. Battery-Powered Devices: Protecting battery life by resetting the system when the battery voltage drops too low.
5. Home Automation: Safeguarding smart home devices from power supply issues to maintain uninterrupted operation.

Alternative Models

1. MAX6418UK26+T: Similar to MAX6419UK26+T but with different threshold voltage options.
2. MAX6417UK26+T: Voltage monitor and reset circuit with adjustable timeout period but in a different package.
3. MAX6389UK26+T: Voltage monitor and reset circuit with additional features like watchdog timer and power-on reset.

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