MAX6425UK24+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT23-5
• Essence: Monitors the voltage level of a power supply and provides 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
• Reset Threshold Options: 2.4V, 2.63V, 3.08V, 4.38V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Quiescent Current: 1µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6425UK24+T has a total of 5 pins:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold selection pin

Functional Features

• Precision voltage monitoring: The MAX6425UK24+T accurately monitors the voltage level of a power supply.
• Reset signal generation: When the monitored voltage falls below the selected threshold, the IC generates an active-low reset signal.
• Manual reset capability: The manual reset input allows for external control of the reset signal.
• Adjustable threshold options: The TH pin enables the selection of different reset threshold voltages.
• Configurable timeout period: The IC offers multiple reset timeout options to suit various application requirements.

Advantages and Disadvantages

Advantages: - Low-power operation ensures minimal energy consumption. - Precise voltage monitoring enhances system reliability. - Small package size (SOT23-5) enables space-efficient designs. - Wide supply voltage range allows compatibility with various power sources.

Disadvantages: - Limited reset threshold and timeout options may not cater to all specific needs. - Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.

Working Principles

The MAX6425UK24+T operates by continuously monitoring the voltage level applied to its VCC pin. When the voltage falls below the selected threshold voltage, the IC asserts an active-low reset signal on the RESET pin. This signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin. The configurable timeout period ensures that the reset signal is maintained for a specific duration after the voltage returns to an acceptable level.

Detailed Application Field Plans

The MAX6425UK24+T finds applications in various fields where reliable voltage monitoring and reset functionality are crucial. Some potential application areas include:

1. Microcontrollers: Ensuring proper system initialization and preventing erratic behavior during power-up or voltage fluctuations.
2. Industrial Control Systems: Providing fault detection and recovery capabilities in critical control circuits.
3. Battery-Powered Devices: Protecting sensitive electronics from undervoltage conditions and preserving data integrity.
4. Automotive Electronics: Monitoring automotive power supplies to prevent damage to electronic components during voltage transients or brownout events.

Detailed and Complete Alternative Models

1. MAX6426UK26+T: Similar to MAX6425UK24+T but with different reset threshold options and timeout periods.
2. MAX6427UK29+T: Offers additional features like adjustable hysteresis and watchdog timer functionality.
3. MAX6428UK31+T: Provides higher reset threshold options and extended operating temperature range.

These alternative models offer flexibility in terms of specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

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