MAX6381LT26D2+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, adjustable reset threshold, small package size
• Package: SOT-23-6
• Essence: The MAX6381LT26D2+T is a voltage monitor and reset circuit designed for low-power applications. It provides accurate monitoring of the power supply voltage and generates a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: The MAX6381LT26D2+T is available in tape and reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Options: Adjustable from 1.25V to 4.63V in 100mV steps
• Reset Timeout Period: Fixed at 140ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Pin Configuration

The MAX6381LT26D2+T has a total of six pins arranged as follows:

```

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| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH VCC |-- Pin 3: Supply Voltage (VCC) --| CT GND |-- Pin 4: Capacitor Terminal (CT) --| TR GND |-- Pin 5: Transistor Terminal (TR) --| PGD GND |-- Pin 6: Power-Good Output (PGD) |___________| ```

Functional Features

• Accurate monitoring of power supply voltage
• Adjustable reset threshold to suit different applications
• Generates a reset signal when the voltage falls below the set threshold
• Power-good output indicates when the supply voltage is within the acceptable range
• Low quiescent current for power-efficient operation
• Fixed reset timeout period ensures reliable system reset

Advantages and Disadvantages

Advantages

• Precise voltage monitoring helps prevent system malfunctions due to low supply voltage
• Adjustable reset threshold allows customization for specific application requirements
• Small package size enables space-saving designs in compact electronic devices
• Low quiescent current minimizes power consumption, ideal for battery-powered applications
• Power-good output provides additional system status information

Disadvantages

• Fixed reset timeout period may not be suitable for all applications requiring longer or shorter timeouts
• Limited number of reset threshold options available in 100mV steps

Working Principles

The MAX6381LT26D2+T operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the set threshold, the reset output is activated, indicating a power failure or low voltage condition. The reset output remains active until the voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX6381LT26D2+T is commonly used in various applications where accurate voltage monitoring and reliable system reset are critical. Some potential application fields include:

1. Battery-powered devices: Ensures proper shutdown or system reset when the battery voltage drops below a safe level.
2. Industrial control systems: Monitors power supply integrity and initiates system reset if voltage fluctuations occur.
3. Automotive electronics: Protects sensitive components from voltage dips or spikes, preventing system failures.
4. Medical equipment: Provides voltage monitoring and reset functionality for critical medical devices.
5. Home automation: Ensures stable operation of smart home devices by monitoring power supply voltage.

Detailed and Complete Alternative Models

1. MAX6382LT26D2+T: Similar to the MAX6381LT26D2+T, but with additional features such as adjustable reset timeout period.
2. MAX6383LT26D2+T: Offers a wider range of reset threshold options for more precise voltage monitoring.
3. MAX6384LT26D2+T: Provides higher accuracy in voltage monitoring and adjustable reset threshold.

These alternative models offer similar functionality to the MAX6381LT26D2+T but may have additional features or specifications that cater to specific application requirements.

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