MAX824SEUK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, reset output
• Package: SOT-23-5
• Essence: Monitors supply voltage and generates a reset signal when the voltage falls below a specified threshold
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable or fixed options available
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The MAX824SEUK+T IC has a total of five pins arranged in the following configuration:

```

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| | --|----|-- VCC (Pin 1) --|----|-- GND (Pin 2) --|----|-- MR (Pin 3) --|----|-- RESET (Pin 4) |____| ```

• VCC (Pin 1): Positive power supply input
• GND (Pin 2): Ground reference
• MR (Pin 3): Manual reset input (active-low)
• RESET (Pin 4): Reset output

Functional Features

• Monitors the supply voltage continuously
• Generates a reset signal when the voltage falls below the specified threshold
• Provides a manual reset option through the MR pin
• Reset timeout period can be adjusted or fixed
• Low quiescent current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation - Low-power consumption extends battery life in portable devices - Adjustable reset timeout period offers flexibility in different applications - Small package size allows for space-efficient designs

Disadvantages: - Limited threshold voltage options may not cover all voltage requirements - Manual reset functionality may not be required in all applications

Working Principles

The MAX824SEUK+T is designed to monitor the supply voltage of a system. It compares the input voltage with a specified threshold voltage. When the voltage falls below the threshold, the IC generates a reset signal on the RESET pin. The reset signal remains active until the voltage rises above the threshold or a timeout period elapses.

The manual reset feature allows the system to be reset externally by pulling the MR pin low. This can be useful during system testing or when a manual reset is required.

Detailed Application Field Plans

The MAX824SEUK+T is commonly used in various electronic systems where voltage monitoring and reset functionality are critical. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides reliable reset signals to ensure safe operation and prevent damage to equipment.
3. Automotive Electronics: Monitors the vehicle's power supply to trigger a reset if the voltage drops below a safe level, protecting sensitive components.
4. Battery-Powered Devices: Prevents excessive discharge of batteries by initiating a reset when the voltage reaches a critical level, preserving battery life.

Detailed and Complete Alternative Models

1. MAX823SEUK+T: Similar to MAX824SEUK+T but with fixed reset timeout period.
2. MAX825SEUK+T: Voltage monitor and reset circuit with adjustable reset timeout period and push-pull output.
3. MAX809SEUK+T: Microprocessor reset circuit with a fixed threshold voltage and push-pull output.

These alternative models offer similar functionality but may have different features or specifications to suit specific application requirements.

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