MAX824LEUK+TG002

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, reset output, adjustable threshold voltage
• Package: SOT-23-5
• Essence: Provides a reliable and accurate voltage monitoring solution for various applications
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: Adjustable from 1.2V to 5V in 100mV steps
• Reset Timeout Period: Fixed at 140ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Detailed Pin Configuration

The MAX824LEUK+TG002 IC has a total of 5 pins arranged as follows:

1. GND: Ground pin
2. MR: Manual Reset input pin
3. VCC: Positive supply voltage pin
4. RESET: Reset output pin
5. TH: Threshold voltage adjustment pin

Functional Features

• Voltage Monitoring: Monitors the supply voltage and generates a reset signal when it falls below the programmed threshold voltage.
• Reset Output: Provides an active-low reset signal to the system when the monitored voltage is below the threshold.
• Adjustable Threshold Voltage: Allows the user to set the desired threshold voltage using an external resistor divider network.
• Manual Reset Input: Provides the ability to manually trigger a reset by asserting a low-level signal on the MR pin.

Advantages and Disadvantages

Advantages: - Low-power consumption - Precision voltage monitoring - Adjustable threshold voltage - Small package size - Easy integration into various systems

Disadvantages: - Fixed reset timeout period may not be suitable for all applications - Limited supply voltage range (1.2V to 5.5V)

Working Principles

The MAX824LEUK+TG002 is designed to monitor the supply voltage of a system and generate a reset signal when the voltage falls below a certain threshold. It utilizes an internal voltage reference and comparator to compare the monitored voltage with the programmed threshold voltage. When the monitored voltage drops below the threshold, the reset output is activated, signaling the system to perform a reset.

The threshold voltage can be adjusted by connecting an external resistor divider network to the TH pin. This allows flexibility in setting the desired voltage level for triggering the reset.

Detailed Application Field Plans

The MAX824LEUK+TG002 is widely used in various applications where reliable voltage monitoring and reset functionality are required. Some common application fields include:

1. Microcontrollers: Ensures proper operation by resetting the microcontroller when the supply voltage drops below a specified level.
2. Battery-Powered Devices: Protects the battery from deep discharge by initiating a reset when the voltage reaches a critical level.
3. Industrial Control Systems: Monitors power supply integrity and triggers a reset in case of voltage fluctuations or failures.
4. Automotive Electronics: Provides voltage monitoring and reset capabilities for automotive systems, ensuring safe and reliable operation.

Detailed and Complete Alternative Models

1. MAX823LEUK+TG002: Similar to MAX824LEUK+TG002 but with a fixed threshold voltage of 2.93V.
2. MAX825LEUK+TG002: Low-power voltage monitor and reset circuit with a fixed threshold voltage of 4.63V.
3. MAX826LEUK+TG002: Precision voltage monitor and reset circuit with adjustable threshold voltage and extended temperature range.

These alternative models offer similar functionality but may have different threshold voltage options or additional features to suit specific application requirements.

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