TPS3831A09DQNT

Product Overview

Category

The TPS3831A09DQNT belongs to the category of voltage supervisors.

Use

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

Characteristics

• Low-power consumption
• Wide operating voltage range
• High accuracy
• Adjustable reset threshold
• Small package size

Package

The TPS3831A09DQNT is available in a small SOT-23 package.

Essence

The essence of the TPS3831A09DQNT is its ability to provide accurate voltage monitoring and reset generation in various electronic applications.

Packaging/Quantity

The TPS3831A09DQNT is typically packaged in reels, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Reset Threshold Voltage: Adjustable from 0.9V to 4.6V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active-Low, Open-Drain

Detailed Pin Configuration

The TPS3831A09DQNT has three pins:

1. VDD: This pin is connected to the power supply voltage.
2. GND: This pin is connected to the ground.
3. RESET: This pin outputs an active-low signal when the monitored voltage falls below the set threshold.

Functional Features

• Accurate voltage monitoring: The TPS3831A09DQNT ensures precise monitoring of the input voltage.
• Adjustable reset threshold: The reset threshold voltage can be adjusted according to the specific requirements of the application.
• Power-saving design: With low quiescent current, the TPS3831A09DQNT minimizes power consumption.
• Open-drain output: The open-drain output allows for easy integration with other components in the system.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various systems.
• Adjustable reset threshold provides flexibility in voltage monitoring.
• Low-power consumption prolongs battery life in portable devices.
• Small package size allows for space-efficient designs.

Disadvantages

• Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.
• Limited number of pins restricts additional functionalities without external circuitry.

Working Principles

The TPS3831A09DQNT operates by comparing the input voltage with the set threshold voltage. When the input voltage falls below the threshold, the RESET pin outputs an active-low signal, indicating a voltage fault or power loss. The reset condition is maintained until the input voltage rises above the threshold again.

Detailed Application Field Plans

The TPS3831A09DQNT finds applications in various fields, including:

1. Battery-powered devices: It ensures proper voltage monitoring and system reset in portable electronics, such as smartphones and tablets.
2. Industrial control systems: The TPS3831A09DQNT provides reliable voltage supervision in industrial automation equipment, preventing malfunctions due to power fluctuations.
3. Automotive electronics: It plays a crucial role in monitoring the voltage levels in automotive systems, ensuring safe and reliable operation.
4. Medical devices: The TPS3831A09DQNT helps maintain stable voltage levels in medical equipment, contributing to patient safety.

Detailed and Complete Alternative Models

1. TPS3830A09DQNT: Similar to TPS3831A09DQNT but with a fixed reset threshold voltage of 0.9V.
2. TPS3832A09DQNT: Similar to TPS3831A09DQNT but with a fixed reset threshold voltage of 2.9V.
3. TPS3831B09DQNT: Similar to TPS3831A09DQNT but with an active-high output instead of active-low.

These alternative models offer similar functionality with slight variations in the reset threshold voltage or output type, allowing for customization based on specific application requirements.

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