MAX819LESA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Monitor
• Characteristics: Low-power, high-accuracy, voltage monitoring
• Package: 8-pin small outline integrated circuit (SOIC)
• Essence: Monitors the voltage level of a power supply and provides an output signal indicating its status
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Accuracy: ±1%
• Threshold Voltage Options: 2.5V, 3V, 3.3V, 4.38V, 5V
• Output Type: Active-low, open-drain
• Quiescent Current: 7µA (typical)

Pin Configuration

The MAX819LESA+T has the following pin configuration:

1. GND: Ground connection
2. VCC: Positive supply voltage input
3. RESET#: Active-low reset output
4. TH: Threshold voltage selection pin
5. MR#: Manual reset input
6. NC: No connection
7. NC: No connection
8. VCC: Positive supply voltage input

Functional Features

• Monitors the input voltage and generates a reset signal when it falls below the threshold voltage
• Provides manual reset capability through the MR# pin
• Open-drain output allows for flexibility in interfacing with other devices
• Low quiescent current ensures minimal power consumption

Advantages and Disadvantages

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

Disadvantages: - Limited threshold voltage options may not cover all application requirements - Open-drain output requires additional pull-up resistor for proper signal level translation

Working Principles

The MAX819LESA+T operates by continuously monitoring the input voltage. When the voltage falls below the threshold voltage set by the TH pin, the IC generates a reset signal on the RESET# pin. This signal can be used to initiate system resets or trigger other actions. The MR# pin allows for manual reset control, providing flexibility in system operation.

Detailed Application Field Plans

The MAX819LESA+T finds applications in various fields where reliable power supply monitoring is crucial. Some potential application areas include:

1. Embedded Systems: Ensuring stable power supply for microcontrollers, sensors, and other components.
2. Industrial Automation: Monitoring power supply integrity in control systems and equipment.
3. Automotive Electronics: Detecting voltage drops in automotive circuits to prevent malfunctions.
4. Telecommunications: Safeguarding critical communication equipment from power disruptions.
5. Medical Devices: Ensuring uninterrupted power supply for medical instruments and devices.

Detailed and Complete Alternative Models

1. MAX809LESA+: Similar to MAX819LESA+T but with fixed threshold voltage options.
2. MAX803LESA+: Low-power microprocessor reset circuit with adjustable threshold voltage.
3. MAX811LESA+: Voltage monitor with manual reset and adjustable threshold voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

Word count: 400 words