MAX821SUS+TG002

Product Overview

• Category: Integrated Circuit
• Use: Voltage Monitor and Reset Circuit
• Characteristics: High accuracy, low power consumption, small package size
• Package: SOT-143
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V, 4.63V, 4.75V, 4.88V
• Reset Timeout Period: 140ms, 280ms, 560ms, 1120ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX821SUS+TG002 has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | RESET | Reset Output| | 3 | VCC | Supply Voltage|

Functional Features

• Monitors the voltage level of a power supply.
• Provides a reset signal when the voltage falls below the set threshold.
• Adjustable threshold voltage options for flexibility.
• Reset timeout period can be selected to suit specific application requirements.
• Low power consumption for energy-efficient operation.
• Small package size allows for space-saving designs.

Advantages and Disadvantages

Advantages: - High accuracy in voltage monitoring. - Wide supply voltage range for compatibility with various power sources. - Adjustable threshold voltage options provide flexibility. - Low power consumption for energy efficiency. - Small package size allows for compact designs.

Disadvantages: - Limited reset timeout period options. - SOT-143 package may not be suitable for all applications requiring voltage monitoring.

Working Principles

The MAX821SUS+TG002 operates by continuously monitoring the voltage level of the power supply connected to its VCC pin. When the voltage falls below the set threshold, the RESET pin is activated, providing a reset signal to the system. The threshold voltage can be adjusted using external resistors connected to the device. The reset timeout period determines how long the reset signal remains active after the voltage rises above the threshold.

Detailed Application Field Plans

The MAX821SUS+TG002 is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are required. Some application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Power management circuits
4. Battery-powered devices
5. Industrial control systems
6. Automotive electronics

Detailed and Complete Alternative Models

• MAX809: Voltage Monitor and Reset Circuit with fixed threshold voltage options.
• MAX823: Voltage Monitor and Reset Circuit with adjustable threshold voltage and longer reset timeout period.
• MAX638: Voltage Monitor and Reset Circuit with additional features like manual reset input and watchdog timer.

These alternative models offer similar functionality but may have different specifications and package options.

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