MAX803ZEXR+TG077

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Detector
• Characteristics: Low-power, reset output, adjustable threshold voltage
• Package: SOT23-3
• Essence: Monolithic CMOS microprocessor reset circuit
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Quiescent Current: 1µA (typical)
• Reset Timeout Period: 140ms (typical)

Detailed Pin Configuration

The MAX803ZEXR+TG077 has a SOT23-3 package with the following pin configuration:

1. GND (Ground): Connected to the ground reference of the system.
2. RESET (Reset Output): Active-low reset signal output.
3. VCC (Supply Voltage): Connected to the positive supply voltage of the system.

Functional Features

• Low-power consumption: The MAX803ZEXR+TG077 operates at a quiescent current of only 1µA, making it suitable for battery-powered applications.
• Adjustable threshold voltage: The device offers multiple options for the reset threshold voltage, allowing flexibility in different system requirements.
• Reset output: The active-low reset signal is provided to ensure proper initialization and reliable operation of the microprocessor or other integrated circuits.

Advantages and Disadvantages

Advantages: - Low power consumption extends battery life in portable devices. - Adjustable threshold voltage accommodates various system voltage levels. - Small package size enables space-saving designs.

Disadvantages: - Limited reset timeout period may not be suitable for all applications requiring longer delays. - Single-channel reset output may not be sufficient for complex systems with multiple components.

Working Principles

The MAX803ZEXR+TG077 is a voltage detector IC that monitors the supply voltage of a system. When the supply voltage drops below the preset threshold, the reset output becomes active-low, signaling the need for a system reset. The device continuously monitors the voltage and keeps the reset output low until the supply voltage rises above the threshold again.

Detailed Application Field Plans

The MAX803ZEXR+TG077 is commonly used in various applications, including:

1. Microcontroller Systems: Ensures proper initialization and reliable operation of microcontrollers by providing a reset signal when the supply voltage falls below the threshold.
2. Battery-Powered Devices: Maximizes battery life by monitoring the voltage and initiating a reset when the battery voltage drops to a critical level.
3. Industrial Control Systems: Protects sensitive electronic components from improper operation due to voltage fluctuations or power supply issues.

Detailed and Complete Alternative Models

1. MAX809: Similar to MAX803, but with a push-pull reset output instead of an open-drain output.
2. MAX811: Provides a manual reset input in addition to the voltage detection functionality.
3. MAX809L: Low-power version of MAX809 with reduced quiescent current for ultra-low-power applications.

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