MAX6728KAYDD3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitoring and Resetting
• Characteristics:
  • Low-power consumption
  • Wide operating voltage range
  • High accuracy
  • Small package size
• Package: SOT23-5
• Essence: This IC is designed to monitor the voltage level of a power supply and reset the system when the voltage falls below a certain threshold.
• Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 4.38V, 4.63V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)
• Reset Timeout Period: Adjustable from 1ms to 1600ms

Detailed Pin Configuration

The MAX6728KAYDD3+T IC has the following pin configuration:

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

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the selected threshold voltage.
• Provides a manual reset input for immediate system reset.
• Adjustable reset timeout period allows customization based on application requirements.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages: - Wide operating voltage range makes it suitable for various applications. - Small package size enables space-saving designs. - High accuracy ensures reliable voltage monitoring. - Low-power consumption extends battery life in portable devices.

Disadvantages: - Limited threshold voltage options may not cover all voltage requirements. - Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.

Working Principles

The MAX6728KAYDD3+T operates by continuously monitoring the supply voltage connected to the VCC pin. When the voltage falls below the selected threshold voltage (set using the TH pin), the IC generates a reset signal on the RESET pin. This reset signal can be used to restart or initialize the system.

Additionally, the MR pin allows for manual reset input, which overrides the voltage monitoring and forces an immediate system reset.

The adjustable reset timeout period determines the duration for which the reset signal remains active after the voltage rises above the threshold level. This feature prevents false resets caused by temporary voltage fluctuations.

Detailed Application Field Plans

The MAX6728KAYDD3+T is widely used in various electronic systems that require reliable voltage monitoring and resetting. Some common application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior due to unstable power supply conditions.
2. Industrial Control Systems: Monitors critical power supplies to prevent damage or data loss during voltage dips or surges.
3. Automotive Electronics: Protects sensitive components from voltage variations and ensures safe operation of vehicle systems.
4. Battery-Powered Devices: Maximizes battery life by initiating a reset when the battery voltage drops below a certain level.
5. Home Automation Systems: Provides a fail-safe mechanism to reset and restore normal operation in case of power supply issues.

Detailed and Complete Alternative Models

1. MAX6716UTZWD3+T
2. MAX6730AUTYD3+T
3. MAX6741XKZWD3+T
4. MAX6750KA29D3+T
5. MAX6760TAWED3+T

These alternative models offer similar voltage monitoring and resetting capabilities, with variations in package size, threshold voltage options, and additional features. It is recommended to review the datasheets of these alternatives for specific application requirements.

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