MAX6420UK30+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-Power, Precision, Adjustable Threshold
• Package: SOT23-5
• Essence: Monitors and controls the voltage level of a system
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.45V, 4.63V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)

Pin Configuration

The MAX6420UK30+T has a total of 5 pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (Active-Low) --| THRESHOLD |-- Pin 3: Threshold Input --| MR |-- Pin 4: Manual Reset Input --| VCC |-- Pin 5: Power Supply (VCC) |___________| ```

Functional Features

• Monitors the voltage level and generates a reset signal when it falls below a specified threshold.
• Adjustable threshold voltage allows customization for different applications.
• Provides a manual reset input for immediate system reset.
• Low quiescent current ensures minimal power consumption.
• Precision voltage monitoring ensures accurate detection.

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with various systems. - Adjustable threshold voltage provides flexibility for different voltage levels. - Low quiescent current minimizes power consumption. - Small package size (SOT23-5) allows for space-efficient designs.

Disadvantages: - Limited number of threshold voltage options available. - Reset timeout period may not be suitable for all applications. - Manual reset input requires external control.

Working Principles

The MAX6420UK30+T is a voltage supervisor IC that continuously monitors the system's supply voltage. It compares the voltage level with a user-adjustable threshold and generates a reset signal when the voltage falls below the set threshold. The reset output remains active-low until the voltage rises above the threshold and a timeout period elapses.

The device also includes a manual reset input, which allows an external signal to force an immediate system reset. This feature is useful during system testing or in situations where a manual reset is required.

The low quiescent current ensures minimal power consumption, making it suitable for battery-powered applications. The precision voltage monitoring guarantees accurate detection of voltage variations, enhancing system reliability.

Detailed Application Field Plans

The MAX6420UK30+T finds applications in various fields, including:

1. Embedded Systems: Provides voltage supervision for microcontrollers, ensuring reliable operation.
2. Power Management: Monitors power supply voltages in power-sensitive devices, preventing damage due to undervoltage conditions.
3. Industrial Control Systems: Ensures stable operation of control systems by detecting voltage fluctuations and initiating appropriate actions.
4. Automotive Electronics: Protects sensitive electronic components from voltage drops, improving overall system performance and longevity.
5. Telecommunications: Monitors power supply voltages in communication equipment, preventing data loss or system failures.

Detailed and Complete Alternative Models

1. MAX6421UK30+T: Similar to MAX6420UK30+T but with additional features such as adjustable reset timeout period.
2. MAX6422UK30+T: Voltage supervisor IC with a wider supply voltage range and higher threshold voltage options.
3. MAX6423UK30+T: Provides multiple reset outputs for monitoring different voltage levels simultaneously.

These alternative models offer similar functionality to the MAX6420UK30+T but may have additional features or specifications that cater to specific application requirements.

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