MAX6381XR28D2+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a certain threshold.
  • Provides a reliable way to ensure proper operation of microcontrollers, digital systems, and other sensitive electronic devices.
• Package: SOT23-5
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.8V
• Reset Timeout Period: Adjustable or Fixed options available
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Detailed Pin Configuration

The MAX6381XR28D2+T IC has the following pin configuration:

1. GND: Ground connection
2. MR: Manual Reset input
3. RESET: Reset output
4. VCC: Power supply input
5. TH: Threshold voltage selection pin

Functional Features

• Accurate voltage monitoring: The MAX6381XR28D2+T accurately monitors the power supply voltage and provides a reset signal when it falls below the specified threshold.
• Adjustable/reset timeout period: The reset timeout period can be adjusted using external components or fixed internally, allowing flexibility in system design.
• Manual reset capability: The MR pin allows for manual reset, enabling system recovery without power cycling.
• Low quiescent current: The IC consumes very low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Compact package: The SOT23-5 package offers a small footprint, making it suitable for space-constrained applications. - Wide supply voltage range: The IC can operate from 1.6V to 5.5V, accommodating various power supply configurations. - Adjustable/reset timeout period: The flexibility in setting the reset timeout period allows customization based on specific system requirements.

Disadvantages: - Limited threshold voltage options: The MAX6381XR28D2+T is available with a fixed threshold voltage of 2.8V, which may not be suitable for all applications requiring different voltage levels. - Single-channel monitoring: This IC provides voltage monitoring and reset functionality for a single power supply, limiting its use in systems with multiple power sources.

Working Principles

The MAX6381XR28D2+T operates by continuously monitoring the voltage level at the VCC pin. When the voltage falls below the threshold voltage set by the TH pin, the RESET output is asserted, indicating a low-voltage condition. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin. The IC's internal circuitry ensures accurate voltage monitoring and reliable reset generation.

Detailed Application Field Plans

The MAX6381XR28D2+T finds applications in various fields, including:

1. Microcontroller Systems: Ensures proper operation and prevents data corruption by providing a reset signal when the power supply voltage drops below the specified threshold.
2. Digital Systems: Protects sensitive digital components from erratic behavior caused by insufficient power supply voltage.
3. Battery-Powered Devices: Monitors battery voltage to prevent deep discharge and damage to the battery or connected devices.
4. Industrial Control Systems: Provides a reliable reset mechanism for critical control systems, ensuring safe and controlled operation.

Detailed and Complete Alternative Models

1. MAX6381XR28D3+T: Similar to MAX6381XR28D2+T, but with a threshold voltage of 2.9V.
2. MAX6381XR28D1+T: Similar to MAX6381XR28D2+T, but with a fixed reset timeout period.

These alternative models offer different threshold voltage options and reset timeout configurations, providing flexibility for various system requirements.

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