ADM1815-R22AKS-RL7

Basic Information Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a certain threshold - Ensures proper operation and prevents data corruption in electronic devices

Package: SOT-23-3

Essence: The ADM1815-R22AKS-RL7 is a voltage supervisor IC that provides reliable monitoring and reset functionality for electronic systems.

Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: 2.2V
• Reset Timeout Period: 140ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADM1815-R22AKS-RL7 has three pins:

1. VCC: Connect this pin to the positive supply voltage.
2. GND: Connect this pin to the ground or negative supply voltage.
3. RESET: This open-drain output pin generates a reset signal when the monitored voltage falls below the threshold.

Functional Features

• Accurate voltage monitoring: The ADM1815-R22AKS-RL7 ensures precise monitoring of the power supply voltage, preventing improper operation due to voltage fluctuations.
• Reset signal generation: When the voltage drops below the threshold, the IC generates a reset signal to initiate a system reset, ensuring data integrity.
• Adjustable reset timeout: The reset timeout period can be adjusted using an external capacitor, allowing customization based on specific system requirements.
• Low power consumption: The IC operates with low quiescent current, minimizing power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - Reliable voltage monitoring and reset functionality - Wide supply voltage range allows compatibility with various systems - Adjustable reset timeout period for flexibility - Low power consumption for energy-efficient designs

Disadvantages: - Limited to SOT-23-3 package, which may not be suitable for all applications requiring a voltage supervisor IC - Single threshold voltage option may not cater to systems with different voltage requirements

Working Principles

The ADM1815-R22AKS-RL7 operates by comparing the monitored voltage with a fixed threshold voltage. When the voltage falls below the threshold, the internal circuitry triggers the RESET pin, generating a reset signal. This signal can be used to reset microcontrollers, digital logic circuits, or other system components.

Detailed Application Field Plans

The ADM1815-R22AKS-RL7 finds applications in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontroller-based systems: Ensures proper operation and prevents data corruption in microcontroller-based applications.
2. Industrial control systems: Provides reliable monitoring and reset capabilities in industrial automation and control systems.
3. Consumer electronics: Protects sensitive electronic devices from voltage fluctuations, ensuring uninterrupted operation.
4. Automotive electronics: Monitors the power supply voltage in automotive systems, preventing malfunctions and ensuring safety.

Detailed and Complete Alternative Models

1. MAX809: Voltage supervisor IC with adjustable reset timeout and multiple threshold voltage options.
2. LTC2910: Precision voltage monitor with programmable reset threshold and adjustable reset timeout.
3. TPS3839: Ultra-low-power voltage supervisor with fixed reset threshold and adjustable reset timeout.

These alternative models offer similar functionality to the ADM1815-R22AKS-RL7 and can be considered based on specific application requirements.

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