MAX809TEUR+TG24

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Reset Timer, Active High, Push-Pull Output
• Package: SOT-23-3
• Essence: This product is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal when the voltage drops below a certain threshold.
• Packaging/Quantity: Tape & Reel (3000 pieces per reel)

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C
• Output Type: Push-Pull
• Output Logic: Active High
• Quiescent Current: 1µA (typical)

Pin Configuration

The MAX809TEUR+TG24 has a SOT-23-3 package with the following pin configuration:

```

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| | --| RST|-- Pin 1: Reset Output --| GND|-- Pin 2: Ground --| VCC|-- Pin 3: Supply Voltage |____| ```

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below the specified threshold.
• Provides a push-pull output for driving external circuitry.
• Active high logic output allows easy integration with other components.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Multiple threshold voltage and reset timeout period options provide flexibility in design. - Low power consumption extends battery life in portable applications. - Small package size enables space-saving on PCBs.

Disadvantages: - Limited number of threshold voltage and reset timeout period options may not suit all applications. - Lack of built-in hysteresis may result in potential noise-related issues.

Working Principles

The MAX809TEUR+TG24 operates by continuously monitoring the supply voltage. When the voltage drops below the programmed threshold, the internal comparator triggers a reset signal. This signal remains active until the voltage rises above the threshold or the reset timeout period elapses. The push-pull output ensures that the reset signal can drive external circuitry effectively.

Detailed Application Field Plans

The MAX809TEUR+TG24 is commonly used in various electronic systems where reliable power supply monitoring is crucial. Some application fields include:

1. Microcontrollers: Ensuring proper system initialization and preventing erratic behavior during power-up or voltage fluctuations.
2. Industrial Control Systems: Providing fault detection and system reset capabilities to maintain stable operation.
3. Automotive Electronics: Monitoring critical voltages to prevent damage and ensure safe operation of vehicle systems.
4. Battery-Powered Devices: Extending battery life by implementing power-saving strategies based on voltage monitoring.

Detailed and Complete Alternative Models

1. MAX809SEUR+TG24: Similar to MAX809TEUR+TG24 but with different threshold voltage options.
2. MAX810TEUR+TG24: Voltage supervisor IC with additional manual reset input feature.
3. MAX811TEUS+TG24: Supervisor IC with adjustable reset timeout period and open-drain output.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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