MAX812LEUS-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low Power, Precision Monitoring, Reset Output
• Package: SOT-143
• Essence: Supervisory Circuit
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

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

Detailed Pin Configuration

The MAX812LEUS-T has a total of four pins:

1. GND: Ground pin.
2. RESET: Active-low reset output.
3. MR: Manual reset input.
4. VCC: Supply voltage input.

Functional Features

• Monitors the supply voltage and asserts the reset output when it falls below the specified threshold.
• Provides a manual reset input for external system reset control.
• Offers a precision monitoring circuit with low power consumption.
• Ensures reliable system operation by preventing code execution errors during power-up and power-down.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Multiple reset threshold voltage and timeout period options provide flexibility in different applications.
• Low power consumption helps prolong battery life in portable devices.
• Precision monitoring ensures accurate detection of voltage variations.

Disadvantages

• Limited number of reset threshold voltage and timeout period options may not meet the requirements of all applications.
• The SOT-143 package may not be suitable for space-constrained designs.

Working Principles

The MAX812LEUS-T operates by continuously monitoring the supply voltage. When the voltage falls below the specified threshold, the reset output is asserted, indicating a power failure or an unstable voltage condition. The reset output remains active until the voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX812LEUS-T is commonly used in various applications where reliable voltage monitoring is crucial. Some of the typical application fields include:

1. Microcontrollers: Ensuring proper system initialization and preventing code execution errors.
2. Embedded Systems: Protecting critical data during power-up and power-down sequences.
3. Industrial Control Systems: Monitoring voltage stability to prevent equipment malfunction.
4. Automotive Electronics: Detecting power supply issues to ensure safe operation of vehicle systems.

Detailed and Complete Alternative Models

• MAX811LEUS-T: Similar to MAX812LEUS-T but with different reset threshold voltage options.
• MAX813LEUS-T: Supervisory circuit with adjustable reset threshold voltage and watchdog timer functionality.
• MAX809LEUS-T: Voltage monitor with a push-pull reset output and adjustable reset threshold voltage.

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