MAX6836VXSD3+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX6836VXSD3+ is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems. It ensures proper operation by generating a reset signal when the voltage falls below a specified threshold.

Characteristics: - Voltage monitoring range: 0.5V to 5.5V - Adjustable reset threshold - Low quiescent current consumption - Wide operating temperature range: -40°C to +85°C

Package: The MAX6836VXSD3+ is available in a small SOT23-6 package, which is suitable for space-constrained applications.

Essence: This IC plays a crucial role in maintaining the stability and reliability of electronic systems by monitoring the power supply voltage and initiating a reset when necessary.

Packaging/Quantity: The MAX6836VXSD3+ is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: Adjustable from 0.5V to 4.625V
• Reset Timeout Period: Fixed at 140ms
• Quiescent Current: 2µA (typical)
• Power-On Reset Delay: 20ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6836VXSD3+ features a six-pin SOT23 package with the following pin configuration:

1. GND (Ground): Connected to the system ground.
2. RESET (Reset Output): Provides an active-low reset signal to the system.
3. MR (Manual Reset Input): Allows manual reset initiation by pulling this pin low.
4. VCC (Supply Voltage): Connected to the positive power supply.
5. TH (Threshold Input): Sets the desired reset threshold voltage.
6. NC (No Connect): This pin is not connected and should be left unconnected.

Functional Features

• Voltage Monitoring: The MAX6836VXSD3+ continuously monitors the supply voltage and compares it with the user-defined threshold.
• Reset Generation: When the supply voltage falls below the set threshold, the IC generates an active-low reset signal to initiate system reset.
• Manual Reset: The manual reset input allows for immediate system reset by pulling the MR pin low.
• Adjustable Threshold: The threshold voltage can be adjusted using an external resistor divider network connected to the TH pin.
• Power-On Reset Delay: The IC provides a fixed delay of 20ms after power-up before generating the reset signal, ensuring stable operation during power transitions.

Advantages and Disadvantages

Advantages: - Wide operating voltage range enables compatibility with various electronic systems. - Adjustable reset threshold allows customization based on specific application requirements. - Low quiescent current consumption minimizes power consumption in battery-powered devices. - Small package size makes it suitable for space-constrained applications.

Disadvantages: - Fixed reset timeout period may not be suitable for all applications requiring longer or shorter timeouts. - Lack of additional features such as watchdog timer or power-on reset delay adjustment limits its versatility in certain scenarios.

Working Principles

The MAX6836VXSD3+ operates by continuously monitoring the supply voltage through the TH pin. It compares the voltage with the user-defined threshold set using an external resistor divider network. If the voltage falls below the threshold, the IC generates an active-low reset signal on the RESET pin, initiating a system reset. The manual reset input (MR pin) allows for immediate reset initiation when pulled low. The IC also incorporates a power-on reset delay to ensure stable operation during power-up.

Detailed Application Field Plans

The MAX6836VXSD3+ finds applications in various electronic systems where voltage monitoring and reset generation are critical for reliable operation. Some potential application fields include:

1. Microcontrollers and Microprocessors: Ensuring proper system initialization and preventing erratic behavior due to voltage fluctuations.
2. Industrial Control Systems: Maintaining stability and reliability by resetting the system when the supply voltage deviates from the desired range.
3. Automotive Electronics: Protecting sensitive components from voltage dips or spikes, preventing potential damage or malfunction.
4. Battery-Powered Devices: Monitoring battery voltage to prevent deep discharge and initiate a reset if necessary.
5. Communication Systems: Safeguarding against power supply disturbances that could disrupt data transmission or system operation.

Detailed and Complete Alternative Models

1. MAX6835VXSD3+: Similar to MAX6836VXSD3+, but with a fixed reset threshold voltage of 2.93V.
2. MAX6837VXSD3+: Offers additional features such as adjustable reset timeout period and power-on reset delay adjustment.
3. MAX683