TPS3838E18DBVRG4

Product Overview

Category

The TPS3838E18DBVRG4 belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage Range: 1.8V
• Low Quiescent Current: 1.5µA (typical)
• Precision Voltage Threshold: ±0.5%
• Power-On Reset Delay: 200ms (typical)
• Open-Drain Output
• Small Package Size: SOT-23-5

Package and Quantity

The TPS3838E18DBVRG4 is packaged in a small SOT-23-5 package. It is available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active-Low, Open-Drain
• Reset Threshold Voltage: 1.8V
• Reset Accuracy: ±0.5%
• Quiescent Current: 1.5µA (typical)
• Power-On Reset Delay: 200ms (typical)

Pin Configuration

The TPS3838E18DBVRG4 has the following pin configuration:

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Pin 1: GND (Ground) Pin 2: VDD (Supply Voltage) Pin 3: MR (Manual Reset) Pin 4: RESET (Reset Output) Pin 5: NC (No Connection)

Functional Features

• Voltage Monitoring: The TPS3838E18DBVRG4 continuously monitors the supply voltage and provides a reset signal when the voltage falls below the threshold.
• Power-On Reset: The device ensures a stable reset output during power-up, with a delay of 200ms to allow for proper system initialization.
• Manual Reset: The MR pin allows for manual reset control, overriding the automatic voltage monitoring.

Advantages and Disadvantages

Advantages

• Low quiescent current consumption, making it suitable for battery-powered applications.
• Precision voltage threshold ensures accurate monitoring of voltage levels.
• Small package size enables space-saving designs.
• Open-drain output allows for flexibility in connecting to other devices.

Disadvantages

• Limited voltage range (1.6V to 6.5V), which may not be suitable for all applications requiring voltage supervision.
• Single threshold voltage option (1.8V), limiting its compatibility with different voltage requirements.

Working Principles

The TPS3838E18DBVRG4 operates by comparing the supply voltage with a precision voltage threshold. When the supply voltage drops below the threshold, the reset output is activated, indicating a low-voltage condition. The device continuously monitors the voltage and keeps the reset output active until the voltage rises above the threshold.

Application Field Plans

The TPS3838E18DBVRG4 finds application in various electronic systems where voltage monitoring and supervision are critical. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics, IoT devices, and wearable technology often rely on batteries. The TPS3838E18DBVRG4 ensures proper voltage monitoring to prevent unexpected shutdowns and protect the battery life.

2. Industrial Control Systems: Voltage supervisors play a crucial role in industrial control systems to ensure stable operation and prevent damage due to voltage fluctuations. The TPS3838E18DBVRG4 can be used in PLCs, motor control units, and power distribution systems.

3. Automotive Electronics: In automotive applications, voltage supervisors are essential for monitoring the battery voltage and protecting sensitive electronic components. The TPS3838E18DBVRG4 can be utilized in engine control units, infotainment systems, and safety modules.

Alternative Models

1. TPS3839E18DBVRG4: Similar to the TPS3838E18DBVRG4, but with a different reset threshold voltage of 1.9V.
2. TPS3838K33DBVRG4: A variant with a higher reset threshold voltage of 3.3V, suitable for applications requiring a higher voltage level for reset activation.
3. TPS3838L33DBVRG4: Another alternative with a lower reset threshold voltage of 3.3V, suitable for applications with lower voltage requirements.

These alternative models provide flexibility in choosing the appropriate voltage supervisor based on specific application needs.

In conclusion, the TPS3838E18DBVRG4 is a voltage supervisor that offers precise voltage monitoring, low quiescent current consumption, and a small package size. While it has limitations in terms