MAX821LUS/GG8

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: SOT-143
• Essence: Monitors voltage levels and provides an output signal when the voltage exceeds a set threshold.
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: Adjustable from 1.25V to 5V in 100mV increments
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 7µA (typical)

Pin Configuration

The MAX821LUS/GG8 has four pins arranged as follows:

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1. VCC: Supply Voltage Input
2. GND: Ground
3. TH: Threshold Voltage Input
4. OUT: Output Signal

Functional Features

• Monitors the input voltage and compares it with the threshold voltage set by the user.
• When the input voltage exceeds the threshold voltage, the output signal is activated.
• The threshold voltage can be adjusted using an external resistor divider network.

Advantages

• Low-power consumption makes it suitable for battery-powered applications.
• Precision monitoring ensures accurate detection of voltage levels.
• Adjustable threshold voltage allows flexibility in different applications.
• Small package size enables space-saving designs.

Disadvantages

• Limited supply voltage range may not be suitable for all applications.
• SOT-143 package may require additional care during soldering.

Working Principles

The MAX821LUS/GG8 operates by continuously monitoring the input voltage applied to the VCC pin. The threshold voltage, set by the TH pin, determines the level at which the output signal is activated. When the input voltage exceeds the threshold voltage, the OUT pin goes high, indicating an overvoltage condition.

Detailed Application Field Plans

The MAX821LUS/GG8 finds applications in various fields, including:

1. Power Supply Monitoring: Detecting overvoltage conditions in power supply circuits.
2. Battery Management: Monitoring battery voltage levels to prevent overcharging or deep discharge.
3. Industrial Control Systems: Ensuring voltage stability in control systems to avoid malfunctions.
4. Automotive Electronics: Protecting sensitive electronic components from excessive voltage.

Detailed and Complete Alternative Models

1. MAX821RUS/GG8: Similar to MAX821LUS/GG8 but with a fixed threshold voltage of 2.5V.
2. MAX821TUS/GG8: Similar to MAX821LUS/GG8 but with a wider supply voltage range of 1.2V to 6.5V.
3. MAX821VUS/GG8: Similar to MAX821LUS/GG8 but with a higher threshold voltage range of 2.5V to 5.5V.

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

In conclusion, the MAX821LUS/GG8 is a low-power voltage monitor IC that offers precision monitoring and adjustable threshold voltage. Its small package size and versatile applications make it a suitable choice for various industries.