ADM803LAKSZ-REEL

Product Overview

Category

The ADM803LAKSZ-REEL belongs to the category of voltage supervisors or reset ICs.

Use

This product is primarily used in electronic systems to monitor and control the power supply voltage. It ensures that the system operates within safe voltage limits and provides a reliable reset signal during power-up, power-down, or voltage fluctuations.

Characteristics

• Voltage monitoring: The ADM803LAKSZ-REEL can monitor voltages ranging from 1.8V to 5.0V.
• Reset output: It provides an active-low reset signal to the system when the monitored voltage falls below a specified threshold.
• Low power consumption: This IC consumes very low power, making it suitable for battery-powered applications.
• Small package size: The ADM803LAKSZ-REEL is available in a small SOT-23 package, which saves board space.

Package and Quantity

The ADM803LAKSZ-REEL is packaged in a SOT-23-3 package. It is typically sold in reels containing a specific quantity, such as 3000 units per reel.

Specifications

• Supply voltage range: 1.8V to 5.0V
• Reset threshold voltage options: 2.63V, 2.93V, 3.08V, 4.38V, and 4.63V
• Reset timeout period: 140ms (typical)
• Quiescent current: 7µA (typical)
• Operating temperature range: -40°C to +85°C

Pin Configuration

The ADM803LAKSZ-REEL has three pins arranged in a SOT-23 package:

1. VCC: Power supply input pin
2. GND: Ground reference pin
3. RESET: Active-low reset output pin

Functional Features

• Voltage monitoring: The ADM803LAKSZ-REEL continuously monitors the VCC voltage.
• Reset signal generation: When the VCC voltage falls below the specified threshold, the RESET pin is driven low, indicating a system reset condition.
• Reset timeout: After power-up or when the VCC voltage rises above the threshold, the reset signal remains active for a fixed timeout period to ensure stable system operation.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Low quiescent current minimizes power consumption.
• Small package size saves board space.
• Multiple reset threshold options provide flexibility for different applications.

Disadvantages

• Lack of adjustable reset threshold limits customization options.
• Limited timeout period may not be suitable for all system requirements.

Working Principles

The ADM803LAKSZ-REEL operates by comparing the VCC voltage with a preset threshold. When the VCC voltage drops below the threshold, the internal circuitry generates an active-low reset signal. This signal remains active for a fixed timeout period after power-up or until the VCC voltage rises above the threshold.

Application Field Plans

The ADM803LAKSZ-REEL finds applications in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Industrial control systems
4. Communication equipment
5. Automotive electronics
6. Power management circuits

Alternative Models

1. MAX803L: Similar voltage supervisor IC offered by Maxim Integrated.
2. MCP809: Voltage supervisor IC provided by Microchip Technology.
3. TPS3808: Reset generator IC manufactured by Texas Instruments.

These alternative models offer similar features and can be considered as substitutes for the ADM803LAKSZ-REEL based on specific application requirements.

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