APX803L40-37SA-7

Product Overview

Category

APX803L40-37SA-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
• High accuracy
• Wide operating voltage range
• Small package size
• Reset output signal
• Adjustable reset threshold voltage

Package

The APX803L40-37SA-7 comes in a small surface-mount SOT-23-3 package.

Essence

The essence of APX803L40-37SA-7 lies in its ability to provide reliable 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

• Supply Voltage Range: 1.8V to 5.5V
• Reset Threshold Voltage: 4.0V
• Reset Timeout Period: 37ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The APX803L40-37SA-7 has three pins:

1. VDD: Connect this pin to the positive supply voltage.
2. GND: Connect this pin to the ground.
3. RESET: This pin outputs a low signal when the monitored voltage drops below the reset threshold.

Functional Features

• Monitors the supply voltage and provides a reset signal when it falls below the specified threshold.
• The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.
• The reset threshold voltage can be adjusted using external resistors.

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered devices.
• High accuracy ensures reliable voltage monitoring.
• Wide operating voltage range allows for versatile applications.
• Small package size saves board space.

Disadvantages

• Fixed reset timeout period may not be suitable for all applications.
• Lack of built-in hysteresis may lead to potential voltage fluctuations during power-up or noisy environments.

Working Principles

The APX803L40-37SA-7 operates by comparing the supply voltage with the preset threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a low-voltage condition. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The APX803L40-37SA-7 finds applications in various fields, including:

1. Battery-powered devices: Provides voltage monitoring and reset functions to ensure proper operation and prevent damage due to low battery voltage.
2. Industrial control systems: Monitors power supply voltages to ensure stable operation and prevent system failures.
3. Automotive electronics: Protects sensitive components from voltage fluctuations and ensures reliable operation in automotive applications.
4. Consumer electronics: Enables safe power-on and power-off sequences, protecting electronic devices from unstable voltage conditions.

Detailed and Complete Alternative Models

1. APX803L30-31SA-7: Similar to APX803L40-37SA-7 but with a lower reset threshold voltage of 3.0V.
2. APX803M50-29SA-7: Offers a higher reset threshold voltage of 5.0V for applications requiring a higher voltage level for reset activation.
3. APX803S20-33SA-7: Features a shorter reset timeout period of 20ms, suitable for applications with stricter timing requirements.

In conclusion, the APX803L40-37SA-7 is a voltage supervisor that provides accurate voltage monitoring and reset functions. Its low power consumption, wide operating voltage range, and small package size make it suitable for various electronic applications. However, its fixed reset timeout period and lack of built-in hysteresis may limit its suitability in certain scenarios.