MAX6837VXSD3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Supervisor
• Characteristics: High accuracy, low power consumption, small package size
• Package: 6-pin SOT23
• Essence: Monitors and supervises the voltage levels of a power supply system
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 1.5µA (typical)

Detailed Pin Configuration

The MAX6837VXSD3+T has the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold voltage selection input
6. RESET#: Active-low reset output (open-drain)

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below the threshold voltage.
• Provides an adjustable reset timeout period to ensure proper system reset.
• Offers a manual reset input for external system control.
• Includes a second reset output with open-drain configuration for additional flexibility.

Advantages and Disadvantages

Advantages: - High accuracy in monitoring power supply voltage. - Low power consumption, ideal for battery-powered applications. - Small package size allows for space-efficient designs.

Disadvantages: - Limited threshold voltage options may not suit all applications. - Reset timeout period adjustment range may be insufficient for certain systems.

Working Principles

The MAX6837VXSD3+T operates by continuously monitoring the power supply voltage. When the voltage falls below the selected threshold voltage, it generates a reset signal to initiate a system reset. The reset timeout period can be adjusted to ensure that the system remains in a reset state for a sufficient duration. The manual reset input allows for external control of the reset function. The open-drain configuration of the second reset output provides flexibility in connecting to other devices.

Detailed Application Field Plans

The MAX6837VXSD3+T is commonly used in various electronic systems where reliable power supply monitoring and reset functionality are required. Some specific application fields include:

1. Embedded Systems: Used to monitor and reset microcontrollers, ensuring proper system initialization.
2. Industrial Automation: Provides voltage supervision for critical components, preventing malfunctions due to power supply issues.
3. Automotive Electronics: Ensures stable operation of automotive control units by monitoring the power supply voltage.
4. Consumer Electronics: Used in portable devices to prevent data corruption or system crashes caused by low voltage conditions.

Detailed and Complete Alternative Models

1. MAX6836VXSD3+T: Similar to MAX6837VXSD3+T but with a different package (8-pin SOT23).
2. MAX6838VXSD3+T: Offers additional features such as adjustable reset threshold voltage and watchdog timer functionality.
3. MAX6839VXSD3+T: Provides multiple reset outputs with different timeout periods, suitable for complex system designs.

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