MAX6420UK17+T

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Precision, Adjustable Threshold
• Package: SOT-23-5
• Essence: This product is a voltage supervisor IC that monitors the power supply voltage and provides a reset signal to the microcontroller or other digital devices when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape & Reel (3,000 pieces per reel)

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 1.575V, 1.8V, 2.32V, 2.63V, 3.08V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Quiescent Current: 1µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6420UK17+T has a SOT-23-5 package with the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset Input)
4. VCC (Supply Voltage)
5. TH (Threshold Voltage Selection)

Functional Features

• Precision Monitoring: The MAX6420UK17+T accurately monitors the power supply voltage and provides a reliable reset signal.
• Adjustable Threshold: The threshold voltage can be selected from multiple options to suit different system requirements.
• Manual Reset Input: The MR pin allows for manual reset of the device, overriding the automatic reset function.
• Low Power Consumption: With a quiescent current of only 1µA, this IC minimizes power consumption in battery-powered applications.
• Reset Timeout Period: The reset signal remains active for a specific duration, selectable from multiple options.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Adjustable threshold allows customization for different voltage levels. - Low power consumption extends battery life. - Manual reset input provides flexibility in system control.

Disadvantages: - Limited number of threshold voltage and timeout period options. - SOT-23-5 package may not be suitable for all applications requiring more pins.

Working Principles

The MAX6420UK17+T operates by continuously monitoring the supply voltage. When the voltage falls below the selected threshold, the reset output is activated, signaling a low-voltage condition to the microcontroller or other digital devices. The reset signal remains active for the specified timeout period, allowing the system to stabilize before resuming normal operation.

Detailed Application Field Plans

The MAX6420UK17+T is commonly used in various applications where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics, IoT sensors, and wearable devices benefit from the low power consumption and precise voltage monitoring provided by this IC.
2. Industrial Control Systems: PLCs (Programmable Logic Controllers), motor control units, and automation equipment rely on accurate voltage supervision to ensure safe and reliable operation.
3. Automotive Electronics: In automotive applications, the MAX6420UK17+T can be used for monitoring the vehicle's power supply and triggering appropriate actions in case of voltage fluctuations.
4. Medical Equipment: Critical medical devices such as patient monitors, infusion pumps, and diagnostic instruments require robust voltage supervision to prevent malfunctions and ensure patient safety.

Detailed and Complete Alternative Models

1. MAX6421UK16+T: Similar to the MAX6420UK17+T, but with a different threshold voltage range.
2. MAX6422UK26+T: Offers additional timeout period options compared to the MAX6420UK17+T.
3. MAX6423UK29+T: Provides a wider supply voltage range and adjustable threshold voltage.

These alternative models offer similar functionality with slight variations in specifications, allowing users to choose the most suitable option for their specific requirements.

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