MAX809SN490T1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Reset Output
• Package: SOT-23-3
• Essence: Monitors the voltage level and provides a reset signal when the voltage drops below a specified threshold.
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 4.63V, 4.88V, 4.90V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809SN490T1 IC has three pins:

1. GND: Ground pin
2. RESET: Reset output pin
3. VCC: Supply voltage input pin

Functional Features

• Monitors the supply voltage continuously
• Generates a reset signal when the voltage drops below the specified threshold
• Provides a stable reset output during power-up and power-down
• Low quiescent current consumption
• Precision voltage monitoring

Advantages

• Wide supply voltage range allows for versatile applications
• Multiple reset threshold voltage and timeout period options provide flexibility
• Small package size enables space-saving designs
• Low-power consumption extends battery life in portable devices
• Reliable reset output ensures proper system initialization

Disadvantages

• Limited number of available reset threshold voltage and timeout period options
• Not suitable for high-voltage applications

Working Principles

The MAX809SN490T1 operates by comparing the supply voltage with a fixed threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or an out-of-range condition. The reset output remains active until the supply voltage rises above the threshold and a specified timeout period elapses.

Detailed Application Field Plans

The MAX809SN490T1 is commonly used in various applications, including:

1. Battery-powered devices: Provides low-power voltage monitoring and reset functionality to ensure proper operation and prevent data corruption during power fluctuations.
2. Microcontroller systems: Ensures reliable system initialization by generating a reset signal when the supply voltage falls below the specified threshold.
3. Industrial control systems: Monitors the power supply voltage to detect faults and trigger appropriate actions, such as shutting down critical equipment or activating backup power sources.

Detailed and Complete Alternative Models

1. MAX809SN490T1G+: Similar to MAX809SN490T1 but available in a different package (SOT-23-5).
2. MAX809SEUR-T: Voltage monitor IC with adjustable reset threshold and timeout options.
3. MAX811TEUS-T: Supervisory circuit with manual reset input and watchdog timer functionality.

(Note: This list is not exhaustive and other alternative models may exist.)

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