MAX803SQ263T1G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitor with manual reset input
• Package: SOT-23-3
• Essence: Provides a reliable way to monitor the power supply voltage in electronic systems and initiate a reset when necessary.
• Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.63V
• Manual Reset Input: Active-low, open-drain output
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)

Detailed Pin Configuration

The MAX803SQ263T1G is a three-pin device with the following pin configuration:

```

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| | --| VCC|-- Pin 1: Supply Voltage (1.0V to 5.5V) --| GND|-- Pin 2: Ground --| MR |-- Pin 3: Manual Reset Input (active-low) |____| ```

Functional Features

• Voltage Monitoring: Monitors the supply voltage and asserts the reset signal when it falls below the threshold voltage.
• Manual Reset Input: Allows for an external reset signal to be applied, overriding the internal voltage monitoring.
• Precision Monitoring: Provides accurate voltage monitoring with a fixed threshold voltage of 2.63V.
• Low Power Consumption: Consumes only 1µA of quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Compact package size allows for space-efficient integration into electronic systems. - Wide supply voltage range enables compatibility with various power supply configurations. - Low quiescent current minimizes power consumption, extending battery life in portable devices.

Disadvantages: - Fixed threshold voltage may not be suitable for applications requiring different voltage levels. - Lack of adjustable hysteresis limits flexibility in voltage monitoring.

Working Principles

The MAX803SQ263T1G operates by continuously monitoring the supply voltage. When the voltage falls below the fixed threshold voltage of 2.63V, the reset output is asserted, indicating a power failure or an unstable voltage condition. The manual reset input allows for an external signal to override the internal voltage monitoring and assert the reset output. The device consumes minimal power during operation, making it suitable for low-power applications.

Detailed Application Field Plans

The MAX803SQ263T1G finds applications in various electronic systems where reliable voltage monitoring and reset functionality are required. Some potential application fields include: - Microcontrollers and microprocessors - Embedded systems - Power management circuits - Battery-powered devices - Industrial control systems

Detailed and Complete Alternative Models

• MAX803SQ263T1G+: Similar to MAX803SQ263T1G, but with a different threshold voltage option (e.g., 2.93V).
• MAX803SQ263T1G-T: Tape and reel packaging with 5000 units per reel.
• MAX803SQ263T1G-W: Wide temperature range version (-40°C to +125°C).

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