MAX825LEXK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Reset Output
• Package: SC-70-3
• Essence: Monitors the power supply voltage and generates a reset signal when the voltage falls below a predetermined threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 3.6V
• Reset Timeout Period: Adjustable or Fixed (140ms, 280ms, 560ms, 1120ms)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX825LEXK+T has three pins:

1. VCC: Power Supply Input
2. GND: Ground
3. RESET: Reset Output

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage drops below the set threshold.
• Provides an adjustable or fixed timeout period for the reset signal.
• Low-power consumption for battery-powered applications.
• Precision voltage monitoring for reliable system operation.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Multiple reset threshold options provide flexibility for different voltage requirements.
• Adjustable or fixed timeout period suits different application needs.
• Small package size (SC-70-3) saves board space.
• Low-power operation extends battery life.

Disadvantages

• Limited number of available reset threshold voltage options.
• Lack of additional features such as hysteresis adjustment.

Working Principles

The MAX825LEXK+T operates by comparing the power supply voltage with a reference voltage. When the supply voltage falls below the set threshold, the internal comparator triggers and generates a reset signal. The timeout period determines how long the reset signal remains active after the voltage returns to normal.

Detailed Application Field Plans

The MAX825LEXK+T is commonly used in various electronic systems where reliable power supply monitoring is crucial. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or brownout conditions.
2. Industrial Control Systems: Provides fault detection and system reset capability for critical equipment.
3. Automotive Electronics: Monitors battery voltage and initiates system reset if necessary.
4. Portable Devices: Protects sensitive components from voltage fluctuations and ensures safe operation.

Detailed and Complete Alternative Models

1. MAX823LEXK+T: Similar to MAX825LEXK+T but with fixed reset threshold voltage options (2.5V, 3.0V, 3.3V).
2. MAX826LEXK+T: Offers adjustable reset threshold voltage and fixed timeout period options.
3. MAX809LEXK+T: Provides a push-pull output instead of an open-drain reset output.

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