ADM1817-R22ARTZ-RL

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Reset Output
• Package: SOT-23-3
• Essence: Monitors the voltage level of a system 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: 1.6V to 5.5V
• Threshold Voltage Options: 2.2V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADM1817-R22ARTZ-RL has three pins: 1. VDD: Connect this pin to the positive supply voltage. 2. GND: Connect this pin to the ground reference. 3. RESET: This open-drain output pin provides a reset signal when the monitored voltage falls below the threshold.

Functional Features

• Precision Monitoring: The ADM1817-R22ARTZ-RL accurately monitors the voltage level with a threshold of 2.2V.
• Reset Output: When the voltage drops below the threshold, the device asserts the RESET pin, indicating a system reset.
• Adjustable Timeout Period: The reset timeout period can be adjusted according to the application requirements.
• Low Power Consumption: With a quiescent current of only 1.5µA, the device minimizes power consumption.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Adjustable timeout period allows flexibility in system reset timing. - Low power consumption prolongs battery life in portable applications.

Disadvantages: - Limited threshold voltage options may not suit all voltage monitoring requirements. - Single-channel design restricts simultaneous monitoring of multiple voltages.

Working Principles

The ADM1817-R22ARTZ-RL operates by comparing the monitored voltage with the internally set threshold voltage. When the voltage falls below the threshold, the device triggers a reset signal. The timeout period determines how long the reset signal remains asserted after the voltage returns to normal.

Detailed Application Field Plans

The ADM1817-R22ARTZ-RL finds applications in various fields, including: 1. Battery-Powered Devices: Ensures proper system operation by monitoring battery voltage and initiating a reset when it drops below the threshold. 2. Microcontroller Systems: Provides a reliable reset signal to microcontrollers during power-up or voltage fluctuations. 3. Industrial Control Systems: Monitors power supply voltages to prevent malfunctions and ensure safe operation.

Detailed and Complete Alternative Models

1. ADM1815-R23ARTZ-RL: Similar to ADM1817-R22ARTZ-RL but with a threshold voltage of 2.3V.
2. ADM1818-R25ARTZ-RL: Offers a higher threshold voltage of 2.5V for different voltage monitoring requirements.
3. ADM1819-R27ARTZ-RL: Provides a threshold voltage of 2.7V, suitable for applications with higher voltage levels.

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