MAX809SEUR+T10

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, reset output, manual reset input, watchdog timer, small package size
• Package: SOT-23-3
• Essence: Monolithic microprocessor supervisory circuit
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V
• Manual Reset Input Threshold Voltage: 0.8V
• Watchdog Timeout Period: 1.6s (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809SEUR+T10 IC has a SOT-23-3 package with the following pin configuration:

```

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| | --| RST | --| GND | --| VCC | |_______| ```

Functional Features

• Voltage monitoring: The MAX809SEUR+T10 continuously monitors the supply voltage and asserts a reset signal when it falls below the specified threshold.
• Manual reset input: An external push-button or switch can be connected to the manual reset input pin to assert a reset signal manually.
• Watchdog timer: The IC includes an internal watchdog timer that resets the system if it does not receive a periodic pulse within the timeout period.
• Low-power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Small package size allows for space-saving designs. - Wide supply voltage range enables compatibility with various systems. - Manual reset input provides flexibility in system control. - Low-power consumption prolongs battery life.

Disadvantages: - Limited number of available threshold voltage options. - Lack of adjustable timeout period for the watchdog timer.

Working Principles

The MAX809SEUR+T10 operates by comparing the supply voltage with a preset threshold voltage. When the supply voltage drops below the threshold, the reset output is asserted, indicating a power failure or low voltage condition. The manual reset input allows for an external signal to override the internal monitoring and assert a reset. The watchdog timer ensures system integrity by resetting the system if it does not receive a periodic pulse within the timeout period.

Detailed Application Field Plans

The MAX809SEUR+T10 is commonly used in various applications where reliable voltage monitoring is crucial. Some potential application fields include: 1. Microcontrollers: Ensuring proper operation and preventing data corruption during power fluctuations. 2. Industrial Control Systems: Monitoring power supply stability in critical equipment. 3. Automotive Electronics: Protecting sensitive components from voltage dips or spikes. 4. Battery-Powered Devices: Preventing damage to batteries due to over-discharge.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MAX809SEUR+T10 are: 1. MAX803/MAX809 Series: These devices have different package options and additional features like active-low reset output. 2. ADM1060: A more advanced voltage supervisor with programmable thresholds and integrated power sequencing capabilities. 3. TPS3836: Offers adjustable reset thresholds and a wider operating temperature range.

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