APX803L20-21SA-7

Product Overview

Category

APX803L20-21SA-7 belongs to the category of voltage detectors.

Use

It is primarily used for monitoring and detecting voltage levels in electronic circuits.

Characteristics

• Low power consumption
• High accuracy
• Wide operating voltage range
• Small package size
• Built-in hysteresis function

Package

The APX803L20-21SA-7 comes in a small surface-mount SOT-23-3 package.

Essence

The essence of APX803L20-21SA-7 lies in its ability to accurately monitor and detect voltage levels, ensuring proper functioning of electronic circuits.

Packaging/Quantity

The product is typically packaged in reels or tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Operating Voltage Range: 1.8V to 5.5V
• Threshold Voltage: 2.0V
• Accuracy: ±1.0%
• Quiescent Current: 0.1μA (typical)
• Output Type: Active low
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The APX803L20-21SA-7 has three pins:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Active-low reset output pin.

Functional Features

• Voltage Monitoring: The APX803L20-21SA-7 continuously monitors the input voltage and provides a reset signal when it falls below the threshold voltage.
• Hysteresis Function: The built-in hysteresis function prevents false triggering by introducing a voltage difference between the rising and falling thresholds.
• Low Power Consumption: With a quiescent current of only 0.1μA, the APX803L20-21SA-7 minimizes power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages

• High accuracy ensures reliable voltage monitoring.
• Wide operating voltage range allows for versatile use in various electronic circuits.
• Low power consumption prolongs battery life in portable devices.
• Small package size enables space-saving designs.

Disadvantages

• Lack of adjustable threshold voltage limits customization options.
• Limited output options (only active low) may not suit all applications.

Working Principles

The APX803L20-21SA-7 operates based on a voltage comparator circuit. It compares the input voltage with the internally set threshold voltage. When the input voltage falls below the threshold, the reset output is activated, indicating a low voltage condition.

Detailed Application Field Plans

The APX803L20-21SA-7 finds applications in various fields, including:

1. Battery-Powered Devices: It ensures proper voltage monitoring to prevent damage to sensitive components when the battery voltage drops.
2. Power Management Systems: The voltage detector aids in controlling power supply switching and system shutdown during critical voltage conditions.
3. Industrial Automation: It can be used for voltage monitoring in control systems to ensure stable operation and prevent malfunctions.

Detailed and Complete Alternative Models

1. APX803L30-31SA-7: Similar to APX803L20-21SA-7 but with a higher threshold voltage of 3.0V.
2. APX803M20-21SA-7: A micro-power version with lower quiescent current for ultra-low power applications.
3. APX803S20-21SA-7: Offers a smaller package size (SOT-23-5) with additional features like manual reset and watchdog timer.

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