APX803L20-29SA-7

Product Overview

Category

APX803L20-29SA-7 belongs to the category of voltage supervisors.

Use

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

Characteristics

• Low-power consumption
• Wide operating voltage range
• High accuracy
• Small package size

Package

The APX803L20-29SA-7 comes in a small surface-mount SOT-23-3 package.

Essence

The essence of APX803L20-29SA-7 lies in its ability to provide accurate voltage monitoring and reset functions in various electronic applications.

Packaging/Quantity

The product is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Operating Voltage Range: 1.8V to 5.5V
• Reset Threshold Voltage: 2.9V
• Reset Timeout Period: 200ms (typical)
• Quiescent Current: 1μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The APX803L20-29SA-7 has three pins:

1. VDD: This pin is connected to the power supply voltage.
2. GND: This pin is connected to the ground.
3. RESET: This pin outputs a reset signal when the monitored voltage drops below the threshold.

Functional Features

• Voltage Monitoring: The APX803L20-29SA-7 continuously monitors the input voltage and provides a reset signal when it falls below the specified threshold.
• Reset Output: The device generates a reset signal that can be used to reset microcontrollers or other digital circuits.
• Power-On Reset: It ensures that the reset output remains active during power-up, preventing any undefined behavior in the system.

Advantages and Disadvantages

Advantages

• Low-power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range allows compatibility with various power supply voltages.
• Small package size enables space-saving designs.
• High accuracy ensures reliable voltage monitoring.

Disadvantages

• The reset timeout period may not be adjustable, limiting its flexibility in certain applications.
• Limited availability of alternative models may restrict design choices.

Working Principles

The APX803L20-29SA-7 operates by comparing the input voltage with the preset threshold voltage. When the input voltage drops below the threshold, the reset output is activated. It remains active until the input voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The APX803L20-29SA-7 finds applications in a wide range of electronic systems, including: 1. Battery-powered devices: It ensures proper functioning by monitoring the battery voltage and initiating a reset if necessary. 2. Microcontroller-based systems: It provides a reliable reset signal during power-up and voltage fluctuations, preventing erratic behavior. 3. Industrial control systems: It helps maintain stable operation by monitoring the power supply voltage and resetting the system in case of voltage drops.

Detailed and Complete Alternative Models

While the APX803L20-29SA-7 is a popular choice, there are alternative models available from different manufacturers. Some notable alternatives include: - MAX803L: Similar specifications and features, offered by Maxim Integrated. - MCP130: Voltage supervisors with adjustable reset timeout period, manufactured by Microchip Technology. - TPS3808: Ultra-low-power voltage supervisors with programmable reset threshold, produced by Texas Instruments.

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

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