MAX805TCPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX805TCPA+ is a voltage supervisor IC that monitors the power supply voltage of electronic devices and provides reset signals to ensure proper system operation.

Characteristics: - Low power consumption - Wide operating voltage range - Adjustable reset threshold - Small package size - High accuracy

Package: The MAX805TCPA+ is available in a compact 8-pin plastic package.

Essence: This IC plays a crucial role in maintaining the stability and reliability of electronic systems by monitoring the power supply voltage and initiating appropriate actions when necessary.

Packaging/Quantity: The MAX805TCPA+ is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Range: 1.2V to VCC - 0.2V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Output Type: Active-Low, Open-Drain

Pin Configuration

The MAX805TCPA+ features the following pin configuration:

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| | --| RESET |-- --| GND |-- --| MR |-- --| VCC |-- --| RESETOUT |-- --| GND |-- --| RESETOUT |-- |___________| ```

Functional Features

1. Voltage Monitoring: The MAX805TCPA+ continuously monitors the power supply voltage and generates a reset signal if it falls below the user-defined threshold.
2. Adjustable Threshold: The reset threshold voltage can be adjusted using an external resistor, allowing flexibility in different applications.
3. Power-On Reset: Upon power-up, the MAX805TCPA+ ensures a reliable system start by holding the reset signal for a specific duration.
4. Manual Reset Input: The MR pin allows for manual resetting of the system when required.
5. Open-Drain Output: The RESET_OUT pin provides an active-low, open-drain output for easy integration with other circuitry.

Advantages and Disadvantages

Advantages: - Low power consumption enhances energy efficiency. - Wide operating voltage range enables compatibility with various power supply systems. - Adjustable reset threshold accommodates different voltage requirements. - Small package size saves board space in compact designs. - High accuracy ensures precise voltage monitoring.

Disadvantages: - Lack of built-in hysteresis may result in potential noise-induced false triggering. - Limited number of pins restricts additional functionalities without external circuitry.

Working Principles

The MAX805TCPA+ operates based on a voltage comparator that compares the monitored power supply voltage with the user-defined threshold. When the voltage drops below the threshold, the comparator triggers the reset circuit, generating a low-level reset signal. This signal remains active until the voltage rises above the threshold or a manual reset is initiated.

Detailed Application Field Plans

The MAX805TCPA+ finds applications in various electronic systems where reliable power supply monitoring is critical. Some potential application fields include: 1. Microcontrollers and microprocessors 2. Embedded systems 3. Industrial automation 4. Automotive electronics 5. Power management circuits

Detailed and Complete Alternative Models

1. MAX803TCPA+: Similar to MAX805TCPA+, but with a fixed reset threshold voltage.
2. MAX809TCPA+: Provides a push-pull output instead of an open-drain output.
3. MAX811TCPA+: Includes a manual reset input with a higher threshold voltage.

These alternative models offer different features and specifications to cater to specific application requirements.

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