MAX803MEXR/V+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low Power, Precision Monitoring, Reset Output
• Package: SOT-23-3
• Essence: Supervisory Circuit
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX803MEXR/V+T IC has a SOT-23-3 package with the following pin configuration:

• Pin 1: GND (Ground)
• Pin 2: RESET (Reset Output)
• Pin 3: VCC (Supply Voltage)

Functional Features

• Monitors the supply voltage and asserts the reset output when it falls below the specified threshold.
• Provides a precision monitoring solution for microcontrollers, DSPs, and other digital systems.
• Low power consumption ensures minimal impact on overall system performance.
• Reset output remains asserted until the supply voltage rises above the threshold and the timeout period elapses.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Multiple reset threshold and timeout options provide flexibility for different applications. - Small form factor and low power consumption make it suitable for portable devices.

Disadvantages: - Limited number of reset threshold and timeout options may not cater to all specific requirements. - Lack of additional features such as hysteresis or adjustable delay limits its versatility.

Working Principles

The MAX803MEXR/V+T operates by continuously monitoring the supply voltage. When the voltage falls below the programmed threshold, the reset output is asserted. The reset output remains active until the supply voltage rises above the threshold and the timeout period elapses. This ensures that the connected microcontroller or digital system is properly reset in case of power fluctuations or brownout conditions.

Detailed Application Field Plans

The MAX803MEXR/V+T finds applications in various fields, including:

1. Embedded Systems: Provides reliable power-on reset functionality for microcontrollers and other embedded systems.
2. Industrial Automation: Ensures proper initialization of control systems and prevents erratic behavior during power-up.
3. Automotive Electronics: Protects sensitive electronic components from voltage dips and transients, enhancing overall system reliability.
4. Medical Devices: Enables safe and controlled power cycling of medical equipment, minimizing the risk of malfunction.
5. Consumer Electronics: Facilitates graceful system restarts in devices like smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

• MAX809: Similar voltage monitor IC with adjustable reset threshold and timeout options.
• MAX811: Voltage monitor IC with manual reset input and watchdog timer functionality.
• MAX813: Dual voltage monitor IC with independent reset outputs for multiple power domains.

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