MAX823MEUK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Detector
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT-23-3
• Essence: Monolithic microprocessor reset circuit
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Options: 2.93V, 3.08V, 3.30V, 4.63V
• Reset Timeout Period: 140ms (min)
• Quiescent Current: 1µA (typ)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX823MEUK+T is a three-pin device with the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. VCC: Supply voltage input

Functional Features

• Monitors supply voltage and asserts reset when it falls below the specified threshold.
• Provides a stable reset signal during power-up and power-down conditions.
• Offers a fixed reset timeout period to ensure proper system initialization.
• Consumes low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Small package size enables space-saving designs.
• Low quiescent current minimizes power consumption.
• Fixed reset timeout period ensures reliable system operation.

Disadvantages

• Limited reset threshold options may not suit all applications.
• Lack of adjustable timeout period may restrict customization.

Working Principles

The MAX823MEUK+T operates by continuously monitoring the supply voltage connected to its VCC pin. When the voltage drops below the preset threshold, the device asserts a low signal on the RESET pin, indicating a reset condition. This ensures that the microprocessor or system it is connected to initializes properly.

The integrated circuit incorporates internal hysteresis to prevent false triggering due to voltage fluctuations. It also features a fixed reset timeout period, allowing sufficient time for the system to stabilize before releasing the reset signal.

Detailed Application Field Plans

The MAX823MEUK+T finds applications in various fields, including:

1. Embedded Systems: Provides reliable power-on reset functionality for microcontrollers and other embedded devices.
2. Portable Electronics: Ensures proper initialization of battery-powered devices such as smartphones, tablets, and wearables.
3. Industrial Control Systems: Facilitates safe startup and shutdown sequences in industrial automation and control systems.
4. Automotive Electronics: Enables accurate monitoring of critical voltages in automotive applications, preventing malfunctions.

Detailed and Complete Alternative Models

1. MAX809: Similar voltage detector IC with adjustable reset threshold options.
2. MAX811: Offers additional manual reset input for system control.
3. MAX638: Provides adjustable reset timeout period for customization.

These alternative models offer similar functionality to the MAX823MEUK+T but may have different specifications or additional features to suit specific application requirements.

In conclusion, the MAX823MEUK+T is a voltage detector IC designed for precise monitoring of supply voltages in various electronic systems. Its small package size, low power consumption, and fixed reset timeout period make it an ideal choice for applications where reliable power-on reset functionality is crucial.