MAX8211EPA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX8211EPA+ belongs to the category of integrated circuits (ICs).

Use

It is primarily used as a voltage monitor and reset circuit.

Characteristics

• Voltage monitoring range: 1.2V to 5V
• Adjustable reset threshold voltage
• Low supply current: 15µA (typical)
• Wide operating temperature range: -40°C to +85°C

Package

The MAX8211EPA+ is available in an 8-pin PDIP (Plastic Dual In-Line Package) package.

Essence

The essence of MAX8211EPA+ lies in its ability to monitor voltage levels and provide a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity

The MAX8211EPA+ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Range: 0.4V to VDD-0.6V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 15µA (typical)
• Power-On Reset Delay: 20ms (typical)

Detailed Pin Configuration

The MAX8211EPA+ has the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset Input)
4. VDD (Supply Voltage)
5. TH (Threshold Adjust)
6. TR (Reset Timeout)
7. NC (No Connection)
8. NC (No Connection)

Functional Features

1. Voltage Monitoring: The MAX8211EPA+ continuously monitors the input voltage and compares it with the user-adjustable threshold voltage.
2. Reset Signal Generation: When the input voltage falls below the threshold voltage, the MAX8211EPA+ generates a reset signal to indicate a power failure or low voltage condition.
3. Adjustable Threshold Voltage: The threshold voltage can be adjusted using the TH pin, allowing flexibility in setting the desired voltage level for triggering the reset signal.
4. Reset Timeout: The MAX8211EPA+ includes a reset timeout feature that ensures the reset signal remains active for a specific period (140ms typical) after the voltage rises above the threshold.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Adjustable threshold voltage provides flexibility in voltage monitoring.
• Low quiescent current minimizes power consumption.
• Reset timeout feature ensures reliable reset signal generation.

Disadvantages

• Limited number of pins may restrict additional functionality.
• Manual reset input (MR) may require external circuitry for manual reset operation.

Working Principles

The MAX8211EPA+ operates by continuously monitoring the input voltage through an internal voltage comparator. The user-adjustable threshold voltage determines the voltage level at which the reset signal is generated. When the input voltage falls below the threshold, the reset output becomes active, indicating a power failure or low voltage condition. The reset signal remains active for a specific period (reset timeout) after the voltage rises above the threshold.

Detailed Application Field Plans

The MAX8211EPA+ finds applications in various fields, including:

1. Power Supply Monitoring: It can be used to monitor the voltage level of power supplies in electronic devices, ensuring proper functioning and preventing damage due to low voltage conditions.
2. Battery-Powered Systems: In battery-powered systems, the MAX8211EPA+ can monitor the battery voltage and generate a reset signal when it drops below a certain level, preventing unreliable operation.
3. Microcontroller Systems: It can be used in microcontroller-based systems to provide a reset signal during power-up or when the supply voltage falls below a specific threshold, ensuring proper system initialization.

Detailed and Complete Alternative Models

1. MAX8212EPA+: Similar to MAX8211EPA+, but with a different reset timeout period (e.g., 200ms).
2. MAX8213EPA+: Offers additional features such as adjustable hysteresis for voltage monitoring and a watchdog timer.

Note: This is not an exhaustive list of alternative models, and there may be other similar products available from different manufacturers.

Word count: 550 words