MAX6445UK31L+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy, reset output
• Package: SOT23-5
• Essence: Monitors voltage levels and provides a reset signal when necessary
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: 3.1V
• Reset Timeout Period: 140ms
• Quiescent Current: 2µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6445UK31L+T has a total of five pins:

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

Functional Features

• Monitors the supply voltage and asserts the reset output when it falls below the threshold voltage
• Provides a manual reset option through the MR pin
• Adjustable threshold voltage using an external resistor divider connected to the TH pin
• Low quiescent current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems
• High accuracy in monitoring voltage levels ensures reliable operation
• Small package size enables space-saving designs
• Low quiescent current minimizes power consumption

Disadvantages

• Fixed reset timeout period may not be suitable for all applications
• Limited number of pins restricts additional functionality integration

Working Principles

The MAX6445UK31L+T operates by continuously monitoring the supply voltage. When the voltage falls below the threshold voltage, the reset output is asserted, indicating a power failure or an out-of-range condition. The reset output remains active until the supply voltage rises above the threshold voltage and the reset timeout period elapses.

Detailed Application Field Plans

The MAX6445UK31L+T finds applications in various fields, including:

1. Battery-powered devices: Ensures proper operation and prevents data corruption during low battery conditions.
2. Microcontroller systems: Provides a reliable reset signal to ensure correct system startup and operation.
3. Industrial equipment: Monitors power supply integrity and initiates appropriate actions in case of voltage fluctuations.
4. Automotive electronics: Protects sensitive components from voltage variations and ensures safe operation.

Detailed and Complete Alternative Models

• MAX6445UK31L+T: The standard version with a 3.1V reset threshold voltage
• MAX6445UK31L+T1: A variant with a 2.93V reset threshold voltage
• MAX6445UK31L+T2: A variant with a 3.08V reset threshold voltage

These alternative models provide flexibility in selecting the desired reset threshold voltage for specific application requirements.

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