MAX6457UKD0A+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy voltage monitoring
• Package: SOT23-5
• Essence: Monitors and supervises voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)

Pin Configuration

The MAX6457UKD0A+T has a total of 5 pins:

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

Functional Features

• Monitors the supply voltage and asserts the reset signal when it falls below the threshold voltage.
• Provides an adjustable reset timeout period to accommodate different system requirements.
• Offers a manual reset input for external control of the reset signal.
• Low quiescent current consumption makes it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various power sources.
• Adjustable reset timeout period provides flexibility in system design.
• Small package size enables space-saving integration into compact electronic devices.
• Low quiescent current consumption prolongs battery life in portable applications.

Disadvantages

• Limited threshold voltage options may not cover all voltage monitoring requirements.
• Manual reset input may require additional external components for proper functionality.

Working Principles

The MAX6457UKD0A+T operates by continuously monitoring the supply voltage. When the voltage falls below the selected threshold voltage, the IC asserts the active-low reset signal. The reset signal remains asserted until the supply voltage rises above the threshold voltage and the reset timeout period elapses. The manual reset input allows external control of the reset signal, overriding the voltage monitoring function.

Detailed Application Field Plans

The MAX6457UKD0A+T finds applications in various electronic systems where voltage supervision is critical. Some potential application fields include:

1. Microcontroller-based Systems: Ensuring reliable operation by monitoring the power supply voltage and initiating a reset when necessary.
2. Battery-powered Devices: Extending battery life by detecting low voltage conditions and triggering appropriate actions.
3. Industrial Control Systems: Providing voltage monitoring and reset capabilities to safeguard sensitive equipment from unstable power sources.
4. Automotive Electronics: Enhancing system reliability by monitoring voltage levels in automotive applications and initiating corrective actions.

Detailed and Complete Alternative Models

1. MAX6458UKD0A+T: Similar to MAX6457UKD0A+T but with different threshold voltage options (1.8V, 2.5V, 3.0V, 3.3V, 5.0V).
2. MAX6459UKD0A+T: Voltage supervisor with adjustable reset timeout period and additional features like watchdog timer and power-fail comparator.
3. MAX6460UKD0A+T: Dual voltage supervisor with two independent monitoring channels and separate reset outputs.

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