TPS3820-33DBVRG4

Product Overview

Category

The TPS3820-33DBVRG4 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 Range: 3.08V to 3.36V
• Accuracy: ±1%
• Low Quiescent Current: 10µA (typical)
• Power-On Reset Delay Time: 200ms (typical)
• Watchdog Timer: 1.6s (typical)
• Operating Temperature Range: -40°C to +85°C

Package

The TPS3820-33DBVRG4 is available in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3820-33DBVRG4 lies in its ability to provide reliable voltage monitoring and reset generation in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with 3000 units per reel.

Specifications

• Supply Voltage Range: 2.5V to 10V
• Threshold Voltage: 3.08V
• Reset Timeout Period: 200ms (typical)
• Watchdog Timeout Period: 1.6s (typical)
• Quiescent Current: 10µA (typical)
• Power-On Reset Delay Time: 200ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3820-33DBVRG4 has the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset Input)
4. VDD (Supply Voltage)

Functional Features

• Voltage Monitoring: The TPS3820-33DBVRG4 continuously monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Power-On Reset: Upon power-up, this device ensures that the system remains in a known state by delaying the reset output for a specified period.
• Watchdog Timer: The integrated watchdog timer prevents system lock-ups by generating a reset signal if the system fails to toggle a specific input within the timeout period.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various electronic systems.
• Low quiescent current minimizes power consumption.
• Small package size enables usage in space-constrained applications.
• Accurate voltage monitoring ensures reliable system operation.

Disadvantages

• Limited reset timeout and watchdog timer periods may not be suitable for certain applications requiring longer intervals.

Working Principles

The TPS3820-33DBVRG4 operates by comparing the supply voltage with the threshold voltage. If the supply voltage drops below the threshold, the reset output is activated. Additionally, the power-on reset delay ensures that the system remains stable during power-up. The watchdog timer monitors a specific input, and if it does not toggle within the timeout period, a reset signal is generated.

Detailed Application Field Plans

The TPS3820-33DBVRG4 finds application in various fields, including but not limited to: - Automotive electronics - Industrial control systems - Medical devices - Consumer electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TPS3820-33DBVRG4 include: - TPS3808G01DBVR - MAX809TTRG - ADM6315-26D2ARTZ

These models can be considered based on specific requirements and design constraints.

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