MAX6420UK26+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-Power, Precision, Reset Output
• Package: SOT23-5
• Essence: Monitors the voltage level of a system and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: 2.63V
• Reset Timeout Period: 140ms
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX6420UK26+T has a total of 5 pins:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold voltage input

Functional Features

• Monitors the supply voltage and generates a reset signal when it drops below the specified threshold.
• Provides a manual reset input for immediate system reset.
• Low quiescent current makes it suitable for battery-powered applications.
• Precision voltage monitoring ensures accurate detection of voltage levels.

Advantages

• Small package size allows for space-efficient designs.
• Wide supply voltage range enables compatibility with various systems.
• Low power consumption prolongs battery life in portable devices.
• Accurate voltage monitoring enhances system reliability.

Disadvantages

• Limited number of pins may restrict additional functionality.
• Fixed reset threshold voltage may not be suitable for all applications.
• Reset timeout period may not be adjustable, limiting flexibility.

Working Principles

The MAX6420UK26+T operates by continuously monitoring the supply voltage through the TH pin. When the voltage falls below the threshold voltage, the RESET pin is driven low, indicating a reset condition. The reset signal remains active until the voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX6420UK26+T is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearables can benefit from the low-power operation and accurate voltage monitoring provided by the MAX6420UK26+T.
2. Industrial Control Systems: The IC's precision voltage monitoring makes it suitable for use in industrial control systems, ensuring stable operation and preventing damage due to voltage fluctuations.
3. Automotive Electronics: The MAX6420UK26+T can be utilized in automotive applications to monitor the vehicle's electrical system and trigger a reset if necessary, enhancing safety and reliability.

Detailed and Complete Alternative Models

1. MAX6421UK26+T: Similar to the MAX6420UK26+T, but with an adjustable reset threshold voltage.
2. MAX6422UK26+T: Provides additional features such as a watchdog timer and adjustable reset timeout period.
3. MAX6423UK26+T: Offers a wider supply voltage range and higher accuracy in voltage monitoring.

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