ADM1812-5ARTZ-RL7

Product Overview

Category

ADM1812-5ARTZ-RL7 belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the voltage levels in electronic circuits.

Characteristics

• Voltage Range: 1.8V to 5.5V
• Accuracy: ±1%
• Low Quiescent Current: 1.5µA (typical)
• Power-On Reset Delay: 200ms (typical)
• Active-Low Push-Pull RESET Output
• Small Package Size: SOT-23-3
• RoHS Compliant

Package and Quantity

ADM1812-5ARTZ-RL7 is packaged in a SOT-23-3 package. It is available in reels of 3000 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage: 4.63V (typical)
• Reset Timeout Period: 140ms (typical)

Pin Configuration

ADM1812-5ARTZ-RL7 has three pins arranged as follows:

```

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| | --| VDD | --| /RESET| --| GND | |_______| ```

Pin Description: - VDD: Power supply input pin. - /RESET: Active-low push-pull reset output pin. - GND: Ground reference pin.

Functional Features

1. Voltage Monitoring: ADM1812-5ARTZ-RL7 continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Power-On Reset: It provides a power-on reset delay of 200ms, ensuring stable operation during power-up.
3. Low Quiescent Current: The device consumes only 1.5µA of current in standby mode, minimizing power consumption.
4. Small Package Size: The SOT-23-3 package allows for space-efficient integration into compact electronic designs.

Advantages and Disadvantages

Advantages

• Wide voltage range compatibility (1.8V to 5.5V).
• Accurate voltage monitoring with ±1% accuracy.
• Low quiescent current for power efficiency.
• Power-on reset delay for stable operation during power-up.
• Small package size for space-constrained applications.

Disadvantages

• Limited reset timeout period (140ms) may not be suitable for all applications requiring longer delays.
• Lack of adjustable threshold voltage limits customization options.

Working Principles

ADM1812-5ARTZ-RL7 operates by comparing the supply voltage with a preset threshold. When the voltage drops below the threshold, the /RESET pin is asserted low, indicating a reset condition. The power-on reset delay ensures that the reset signal remains active for a specified period after power-up, allowing the system to stabilize before normal operation resumes.

Application Field Plans

ADM1812-5ARTZ-RL7 finds applications in various fields, including: 1. Microcontrollers and microprocessors 2. Embedded systems 3. Battery-powered devices 4. Industrial automation 5. Consumer electronics

Alternative Models

Some alternative models that offer similar functionality to ADM1812-5ARTZ-RL7 include: 1. MAX809: Manufactured by Maxim Integrated, it offers adjustable reset thresholds. 2. TPS3839: Produced by Texas Instruments, it provides a wider range of reset timeout periods. 3. MCP101: Offered by Microchip Technology, it features a higher accuracy voltage monitor.

These alternative models can be considered based on specific application requirements and desired features.

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