MAX6423US31+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, adjustable threshold voltage, small package size
• Package: SOT23-5
• Essence: Monitors the power supply voltage and generates a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Adjustable Threshold Voltage Range: 0.4V to 5V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6423US31+T has a total of 5 pins:

1. GND: Ground connection
2. MR: Manual reset input pin
3. VCC: Positive power supply input
4. RESET: Reset output pin
5. TH: Threshold voltage adjustment pin

Functional Features

• Monitors the power supply voltage and generates a reset signal when the voltage falls below the set threshold.
• Adjustable threshold voltage allows customization for different applications.
• Low-power consumption makes it suitable for battery-powered devices.
• Small package size (SOT23-5) saves board space.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various power sources. - Adjustable threshold voltage provides flexibility in different voltage monitoring scenarios. - Low-power operation extends battery life in portable devices. - Small package size enables compact designs.

Disadvantages: - Limited reset timeout period may not be suitable for all applications requiring longer timeouts. - SOT23-5 package may be challenging for manual soldering or rework.

Working Principles

The MAX6423US31+T is a voltage supervisor IC that continuously monitors the power supply voltage. It compares the supply voltage with a user-adjustable threshold voltage. When the supply voltage falls below the set threshold, the RESET pin is asserted, generating a reset signal to the microcontroller or other system components. The manual reset input (MR) allows for an external reset trigger.

Detailed Application Field Plans

The MAX6423US31+T is commonly used in various applications where reliable power supply monitoring is critical. Some typical application fields include:

1. Battery-Powered Devices: Portable electronics, such as smartphones, tablets, and wearables, benefit from the low-power operation and adjustable threshold voltage of the MAX6423US31+T.
2. Industrial Control Systems: The IC ensures proper functioning of control systems by monitoring the power supply voltage and initiating a reset if necessary.
3. Automotive Electronics: In automotive applications, the MAX6423US31+T provides voltage supervision to prevent malfunctions caused by unstable power supply conditions.

Detailed and Complete Alternative Models

1. MAX6424US31+T: Similar to the MAX6423US31+T, but with a different reset timeout period.
2. MAX6425US31+T: Offers additional features like a watchdog timer and a power-fail comparator.
3. MAX6426US31+T: Provides multiple adjustable threshold voltages for more complex monitoring requirements.

These alternative models offer similar functionality with slight variations to cater to specific application needs.

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