MAX809REXR+TG50

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Reset Timer, Active-Low Push-Pull, Open Drain, 1 Channel, SOT-23-3 Package
• Package: SOT-23-3
• Essence: MAX809REXR+TG50 is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other digital devices when the voltage falls below a certain threshold.
• Packaging/Quantity: Available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 3.42V, 4.38V, 4.63V, 4.75V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809REXR+TG50 has three pins:

1. GND: Ground pin
2. RESET: Reset output pin
3. VCC: Power supply input pin

Functional Features

• Low power consumption: The MAX809REXR+TG50 operates with low quiescent current, making it suitable for battery-powered applications.
• Reset timer: It includes an internal timer that ensures the reset signal remains active for a specific duration after the voltage rises above the threshold.
• Active-low push-pull and open-drain outputs: The device offers flexibility in choosing the output configuration based on the application requirements.
• Wide supply voltage range: It can operate with a supply voltage as low as 1.0V and as high as 5.5V, making it compatible with various systems.

Advantages and Disadvantages

Advantages: - Low power consumption extends battery life in portable devices. - Wide supply voltage range allows compatibility with different systems. - Flexible output configuration options provide versatility in design.

Disadvantages: - Limited reset threshold voltage and timeout period options may not suit all applications. - SOT-23-3 package may require additional precautions during assembly.

Working Principles

The MAX809REXR+TG50 monitors the system's power supply voltage using an internal voltage reference and comparator. When the voltage falls below the set threshold, the reset output is activated, signaling the microcontroller or other digital devices to perform a reset. The internal timer ensures that the reset signal remains active for a specific duration after the voltage rises above the threshold, preventing false resets due to temporary voltage fluctuations.

Detailed Application Field Plans

The MAX809REXR+TG50 is commonly used in various applications, including but not limited to:

1. Microcontroller-based systems: Provides reliable power-on reset functionality to ensure proper initialization of microcontrollers.
2. Industrial control systems: Monitors power supply voltage to prevent malfunctions and ensure safe operation.
3. Automotive electronics: Ensures stable operation of critical components by resetting them when the supply voltage drops below a certain level.
4. Battery-powered devices: Maximizes battery life by efficiently managing power supply voltage and preventing unexpected shutdowns.

Detailed and Complete Alternative Models

1. MAX809SEXR+TG50: Similar to MAX809REXR+TG50, but with different reset threshold voltage and timeout period options.
2. MAX810REUR+T: Voltage supervisor IC with a different package (SOT-23-5) and additional features like manual reset input.
3. MAX811TEUS+T: Voltage supervisor IC with a push-pull output and adjustable reset threshold voltage.

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

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