MAX836EUS+TG002

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a specified threshold.
  • Provides a reliable way to ensure proper system operation by resetting the microcontroller or other digital logic devices during power-up, power-down, or brownout conditions.
• Package: SOT-143
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.5V, 3.08V, 4.63V
• Reset Timeout Period: Adjustable from 1ms to 1600ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX836EUS+TG002 IC has the following pin configuration:

```

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| | --| VCC |-- --| RESET |-- --| GND |-- |_______| ```

Functional Features

• Monitors the voltage level continuously.
• Generates a reset signal when the voltage falls below the set threshold.
• Adjustable reset timeout period allows customization for specific applications.
• Low quiescent current consumption.
• Built-in glitch immunity ensures reliable operation.

Advantages

• Compact package size enables space-saving designs.
• Wide supply voltage range accommodates various power supply configurations.
• Adjustable reset timeout period provides flexibility for different system requirements.
• Low power consumption prolongs battery life in portable applications.
• Glitch immunity enhances system reliability.

Disadvantages

• Limited threshold voltage options may not cover all voltage monitoring scenarios.
• Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.

Working Principles

The MAX836EUS+TG002 operates by comparing the supply voltage with a preset threshold voltage. When the supply voltage falls below the threshold, the internal circuit generates a reset signal, which can be used to reset the microcontroller or other digital logic devices. The reset timeout period determines how long the reset signal remains active after the supply voltage returns above the threshold.

Detailed Application Field Plans

The MAX836EUS+TG002 is commonly used in various applications where reliable voltage monitoring and reset functionality are required. Some typical application fields include:

1. Embedded Systems: Ensuring proper initialization and operation of microcontrollers, DSPs, and FPGAs.
2. Industrial Control Systems: Preventing data corruption and ensuring system integrity during power fluctuations.
3. Automotive Electronics: Resetting critical components during voltage transients to avoid malfunctions.
4. Medical Devices: Providing a fail-safe mechanism for medical equipment that requires stable power supply.
5. Consumer Electronics: Protecting sensitive digital circuits from voltage variations and ensuring reliable operation.

Detailed and Complete Alternative Models

1. MAX809: Voltage monitor and reset circuit with fixed threshold options and adjustable reset timeout period.
2. ADM708: Supervisory circuit with adjustable threshold voltage and reset timeout period.
3. TPS3808: Precision voltage supervisor with programmable threshold voltage and watchdog timer.

These alternative models offer similar functionality to the MAX836EUS+TG002 and can be considered based on specific requirements and design constraints.

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