MAX636ACSA+ - English Editing Encyclopedia Entry

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, precision voltage monitor with adjustable threshold
• Package: 8-pin Small Outline Integrated Circuit (SOIC)
• Essence: Monitors the voltage level of a power supply and provides an output signal when it falls below a certain threshold
• Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Range: Adjustable from 1.25V to 5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active-Low Open-Drain
• Accuracy: ±1.5% (typical)

Pin Configuration

The MAX636ACSA+ has the following pin configuration:

```

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| | --| VCC GND |-- Pin 1: Supply Voltage (VCC) --| TH RST |-- Pin 2: Threshold Adjust --| MR OUT |-- Pin 3: Manual Reset --| GND GND |-- Pin 4: Ground (GND) --| GND GND |-- Pin 5: Ground (GND) --| GND GND |-- Pin 6: Ground (GND) --| GND GND |-- Pin 7: Ground (GND) --| GND GND |-- Pin 8: Ground (GND) |___________| ```

Functional Features

• Monitors the voltage level of a power supply
• Provides an active-low output signal when the voltage falls below the adjustable threshold
• Adjustable threshold allows customization for different applications
• Manual reset pin for immediate system restart
• Low quiescent current ensures minimal power consumption

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with various systems - Adjustable threshold provides flexibility for different voltage monitoring requirements - Low quiescent current minimizes power consumption - Active-low open-drain output simplifies interfacing with other devices

Disadvantages: - Limited accuracy of ±1.5% may not be suitable for highly precise applications - Only available in an 8-pin SOIC package, limiting integration options

Working Principles

The MAX636ACSA+ operates by comparing the input voltage (VCC) with the adjustable threshold voltage (TH). When VCC falls below TH, the output pin (OUT) is pulled low, indicating a voltage fault. The manual reset pin (MR) can be used to force a system restart even if the voltage has not recovered.

Detailed Application Field Plans

The MAX636ACSA+ finds applications in various fields, including:

1. Power Supply Monitoring: Ensuring stable voltage levels in electronic systems.
2. Battery Management: Detecting low battery conditions and triggering appropriate actions.
3. Industrial Control Systems: Monitoring critical voltages in industrial automation equipment.
4. Automotive Electronics: Protecting sensitive components from undervoltage events.
5. Home Automation: Voltage monitoring in smart home devices for enhanced safety.

Detailed Alternative Models

1. MAX638ACPA+: Similar to MAX636ACSA+, but available in a 8-pin DIP package.
2. MAX637BCPA+: Precision voltage monitor with fixed threshold voltage of 4.63V.
3. MAX631BCPA+: Voltage monitor with adjustable threshold and push-pull output.

These alternative models offer different package options and additional features to suit specific application requirements.

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