APX803L20-48SA-7

Product Overview

Category

APX803L20-48SA-7 belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the power supply voltage in electronic devices.

Characteristics

• Low-power consumption
• Wide operating voltage range
• High accuracy
• Small package size
• Reset output delay function

Package

The APX803L20-48SA-7 comes in a small SOT-23-3 package.

Essence

The essence of APX803L20-48SA-7 lies in its ability to provide accurate voltage monitoring and reset functions, ensuring stable operation of electronic devices.

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
• Threshold Voltage: 2.0V
• Reset Output Type: Active-Low
• Reset Output Delay Time: 200ms (typical)
• Quiescent Current: 1μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The APX803L20-48SA-7 has three pins:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Reset output pin.

Functional Features

• Voltage Monitoring: The APX803L20-48SA-7 continuously monitors the power supply voltage and provides a reset signal when it falls below the threshold voltage.
• Reset Output Delay: It incorporates a delay circuit that ensures a stable reset signal is generated after power-up, preventing false resets during power fluctuations.
• Low-Power Consumption: With a quiescent current of only 1μA, the APX803L20-48SA-7 minimizes power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various electronic devices.
• Small package size enables space-saving designs.
• Accurate voltage monitoring ensures reliable operation.
• Low-power consumption prolongs battery life.

Disadvantages

• The reset output delay time may not be suitable for applications requiring faster response times.
• Limited availability of alternative models from other manufacturers.

Working Principles

The APX803L20-48SA-7 operates by comparing the power supply voltage with the threshold voltage. When the voltage drops below the threshold, the reset output is activated, signaling a low-voltage condition. The reset output remains active until the voltage rises above the threshold, ensuring stable operation of the device.

Detailed Application Field Plans

The APX803L20-48SA-7 finds application in various electronic devices where voltage monitoring and reset functions are critical. Some specific application fields include:

1. Microcontrollers: Ensures reliable operation by resetting the microcontroller when the power supply voltage drops below the threshold.
2. Battery-Powered Devices: Maximizes battery life by providing accurate voltage monitoring and preventing excessive discharge.
3. Industrial Control Systems: Maintains system integrity by resetting control circuits during power fluctuations or voltage drops.

Detailed and Complete Alternative Models

While the APX803L20-48SA-7 is a popular choice, there are alternative models available from different manufacturers that offer similar functionality. Some notable alternatives include:

1. MAX803L: Manufactured by Maxim Integrated, it offers comparable features and performance.
2. MCP100: Produced by Microchip Technology, it provides voltage monitoring and reset functions in a different package.
3. TPS3808: Texas Instruments' offering with additional features such as adjustable reset threshold and manual reset input.

In conclusion, the APX803L20-48SA-7 is a voltage supervisor with wide operating voltage range, low-power consumption, and accurate voltage monitoring capabilities. Its small package size makes it suitable for space-constrained designs. While it has some limitations, it finds application in various electronic devices and has alternative models available from different manufacturers.