TPS3838E18QDBVRQ1

Product Overview

Category

The TPS3838E18QDBVRQ1 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: 1.8V
• Low Quiescent Current: 1.5µA (typical)
• Precision Voltage Threshold: ±0.5%
• Power-On Reset Delay: 200ms (typical)
• Open Drain Output
• Wide Operating Temperature Range: -40°C to +125°C
• Small Package Size: SOT-23 (DBV)

Package and Quantity

The TPS3838E18QDBVRQ1 is available in a small SOT-23 package. It is typically sold in reels with a quantity of 3000 units per reel.

Specifications

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

Pin Configuration

The TPS3838E18QDBVRQ1 has the following pin configuration:

```

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| | --|VDD |-- VDD (Supply Voltage) --|GND |-- GND (Ground) --|RST |-- RST (Reset Output) |____| ```

Functional Features

• Voltage Monitoring: The TPS3838E18QDBVRQ1 continuously monitors the supply voltage and provides a reset signal when it falls below the specified threshold.
• Power-On Reset: The device includes a power-on reset delay of 200ms to ensure stable operation during power-up.
• Low Quiescent Current: With a typical quiescent current of only 1.5µA, the TPS3838E18QDBVRQ1 minimizes power consumption in battery-powered applications.
• Precision Voltage Threshold: The voltage threshold accuracy of ±0.5% ensures reliable monitoring and precise reset signals.

Advantages and Disadvantages

Advantages

• Wide operating temperature range allows for use in various environmental conditions.
• Small package size enables space-saving designs.
• Low quiescent current reduces power consumption.
• Precision voltage threshold ensures accurate monitoring.

Disadvantages

• Limited supply voltage range (1.6V to 6.5V).
• Open drain output may require additional circuitry for certain applications.

Working Principles

The TPS3838E18QDBVRQ1 operates by comparing the supply voltage with a fixed threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or low voltage condition. The power-on reset delay ensures that the reset signal is stable during power-up, preventing false triggers.

Application Field Plans

The TPS3838E18QDBVRQ1 finds application in various electronic systems where voltage monitoring and reliable reset functionality are crucial. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics, IoT devices, and wearable devices can benefit from the low quiescent current and precise voltage monitoring provided by the TPS3838E18QDBVRQ1.
2. Automotive Electronics: The wide operating temperature range makes this voltage supervisor suitable for automotive applications, such as engine control units, infotainment systems, and safety modules.
3. Industrial Control Systems: The TPS3838E18QDBVRQ1 can be used in industrial automation, robotics, and control systems to ensure stable operation and prevent damage due to voltage fluctuations.

Alternative Models

• TPS3838E18DBVR: This model offers the same features and specifications but comes in a different package (SOT-23).
• TPS3838E18DBVT: Similar to the previous model, but with a tape and reel packaging option.
• TPS3838E18QDBVRQ1G4: This variant has an extended temperature range of -40°C to +150°C, suitable for harsh environments.

Note: Please refer to the manufacturer's datasheet for complete details on alternative models.

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