MAX6731UTLD3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT-23-6
• Essence: Monitors the voltage level of a power supply or battery
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 1.575V, 2.048V, 2.5V, 3.075V, 4.095V
• Accuracy: ±1%
• Quiescent Current: 1µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MAX6731UTLD3+T has a total of six pins arranged as follows:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| OUT RST |-- Pin 2: Reset Output (OUT) --| TH TH |-- Pin 3: Threshold Input (TH) --| TH TH |-- Pin 4: Threshold Input (TH) --| NC NC |-- Pin 5: No Connection (NC) --| VDD GND |-- Pin 6: Power Supply (VDD) |___________| ```

Functional Features

• Precision voltage monitoring with selectable threshold options
• Open-drain reset output for system reset signal
• Wide supply voltage range allows compatibility with various power sources
• Low quiescent current ensures minimal power consumption
• High accuracy provides reliable voltage monitoring

Advantages and Disadvantages

Advantages

• Flexible threshold voltage options cater to different voltage monitoring requirements
• Low-power operation prolongs battery life in portable devices
• Small package size enables space-saving designs
• Wide operating temperature range allows usage in extreme environments

Disadvantages

• Limited to voltage monitoring applications only
• Not suitable for high-voltage applications (above 5.5V)

Working Principles

The MAX6731UTLD3+T operates by comparing the input voltage at the threshold pins (TH) with the internally set threshold voltage. When the input voltage falls below the threshold, the reset output (OUT) is activated, indicating a low voltage condition. The open-drain configuration of the reset output allows easy integration with other system components.

Detailed Application Field Plans

The MAX6731UTLD3+T finds applications in various fields, including:

1. Battery-Powered Devices: Monitors battery voltage to prevent over-discharge and ensure safe operation.
2. Power Supply Units: Provides voltage monitoring for stable and reliable power delivery.
3. Industrial Control Systems: Ensures proper voltage levels for critical control circuits.
4. Automotive Electronics: Monitors battery voltage to prevent vehicle breakdowns.
5. Medical Equipment: Safeguards sensitive electronic components by monitoring power supply voltage.

Detailed and Complete Alternative Models

1. MAX6730UTLD3+T: Similar to MAX6731UTLD3+T but with different threshold voltage options.
2. MAX6732UTLD3+T: Higher accuracy version with ±0.5% threshold voltage accuracy.
3. MAX6733UTLD3+T: Lower quiescent current variant with 500nA typical current consumption.

These alternative models provide similar functionality with slight variations in specifications to cater to specific application requirements.

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