TPS3820-50DBVRG4

Product Overview

Category

The TPS3820-50DBVRG4 belongs to the category of voltage supervisors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems.

Characteristics

• Voltage supervision range: 0.8V to 5.5V
• Low quiescent current: 6 µA (typical)
• Precision voltage threshold: ±2%
• Power-on reset delay time: 200 ms (typical)
• Open-drain output
• Small package size: SOT-23-5

Package and Quantity

The TPS3820-50DBVRG4 is available in a small SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply voltage range: 0.8V to 5.5V
• Operating temperature range: -40°C to +85°C
• Power-on reset threshold options: 2.93V, 3.08V, 3.3V, 4.38V, 4.63V, 4.75V, 4.88V, 5V
• Reset timeout period options: 1.25 ms, 20 ms, 140 ms, 1120 ms

Pin Configuration

The TPS3820-50DBVRG4 has the following pin configuration:

____ VDD |1 5| GND RST |2 4| N/C GND |3___|

Functional Features

• Voltage monitoring: The TPS3820-50DBVRG4 continuously monitors the input voltage and provides a reset signal when it falls below the specified threshold.
• Power-on reset: Upon power-up, the device ensures that the system remains in a known state by holding the reset signal until the supply voltage stabilizes.
• Precision voltage threshold: The product offers a precise voltage threshold with an accuracy of ±2%, ensuring reliable voltage monitoring.

Advantages and Disadvantages

Advantages

• Low quiescent current consumption helps in reducing overall power consumption.
• Small package size allows for space-efficient integration into electronic systems.
• Wide operating voltage range makes it compatible with various applications.
• Precision voltage threshold ensures accurate voltage monitoring.

Disadvantages

• Limited reset timeout period options may not cater to all application requirements.
• Lack of adjustable voltage threshold limits customization possibilities.

Working Principles

The TPS3820-50DBVRG4 operates by continuously comparing the input voltage with the specified threshold. If the voltage falls below the threshold, the device asserts the reset signal, indicating a power failure or voltage drop. The reset signal remains active until the voltage rises above the threshold and stabilizes, ensuring a controlled system restart.

Application Field Plans

The TPS3820-50DBVRG4 finds applications in various fields, including: 1. Power supply units 2. Microcontrollers 3. Industrial automation systems 4. Automotive electronics 5. Battery-powered devices

Alternative Models

Some alternative models that offer similar functionality to the TPS3820-50DBVRG4 include: - TPS3808G01DBVR - MAX809RTRG - ADM708TARZ

These alternatives can be considered based on specific application requirements and availability.

In conclusion, the TPS3820-50DBVRG4 is a voltage supervisor that provides reliable voltage monitoring and power-on reset functionality. With its low quiescent current, small package size, and precision voltage threshold, it offers several advantages for various applications in different fields. However, the limited reset timeout period options and lack of adjustable voltage threshold may be considered as disadvantages.