TPS3839L30DQNT - English Editing Encyclopedia Entry

Product Overview

Category

The TPS3839L30DQNT belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage Range: 3.0V
• Low Quiescent Current: 1.5µA (typical)
• Precision Voltage Threshold: ±2%
• Power-On Reset Delay Time: 200ms (typical)
• Open Drain Output
• Wide Operating Temperature Range: -40°C to +125°C
• Small Package Size: SOT23-5

Package and Quantity

The TPS3839L30DQNT is available in a small SOT23-5 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 1.5µA (typical)
• Reset Threshold Accuracy: ±2%
• Power-On Reset Delay Time: 200ms (typical)
• Output Type: Open Drain
• Output Voltage Low: 0.4V (maximum)
• Output Current: 10mA (maximum)

Pin Configuration

The TPS3839L30DQNT has a standard SOT23-5 pin configuration:

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

Functional Features

• Voltage Monitoring: The TPS3839L30DQNT continuously monitors the supply voltage and provides a reset signal when it falls below the specified threshold.
• Power-On Reset: The device ensures a stable reset output during power-up, preventing erratic behavior of the system.
• Manual Reset Input: The MR pin allows for manual resetting of the device, overriding the automatic reset function.
• Open Drain Output: The open drain output allows for easy integration with other components in the system.

Advantages and Disadvantages

Advantages

• Low quiescent current enables power-efficient operation.
• Precision voltage threshold ensures accurate monitoring of voltage levels.
• Wide operating temperature range makes it suitable for various environments.
• Small package size allows for space-saving integration into compact designs.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• No adjustable reset threshold, limiting customization options.

Working Principles

The TPS3839L30DQNT operates by comparing the supply voltage with a precision voltage threshold. When the supply voltage drops below this threshold, the device triggers a reset signal. This signal remains active until the supply voltage rises above the threshold and the power-on reset delay time elapses.

Detailed Application Field Plans

The TPS3839L30DQNT finds application in various electronic systems that require reliable voltage monitoring and control. Some potential fields of application include:

1. Battery-Powered Devices: Portable electronics, such as smartphones and tablets, can benefit from the TPS3839L30DQNT's low quiescent current and precise voltage monitoring to optimize battery life and prevent unexpected shutdowns.

2. Industrial Control Systems: The device can be used in industrial control systems to ensure stable operation by monitoring the power supply voltage and initiating appropriate actions in case of voltage fluctuations or failures.

3. Automotive Electronics: In automotive applications, the TPS3839L30DQNT can provide voltage supervision to critical components, such as engine control units and safety systems, ensuring reliable operation even in harsh environments.

Detailed Alternative Models

1. TPS3839K33DBVR: This alternative model offers a higher voltage threshold of 3.3V, suitable for applications requiring a different voltage level.
2. TPS3839J25DBVT: With a lower voltage threshold of 2.5V, this alternative model can be used in systems with specific voltage requirements.
3. TPS3839L33DBVR: Similar to the TPS3839L30DQNT, but with a higher voltage threshold of 3.3V, providing flexibility for different voltage monitoring needs.

These alternative models offer similar functionality to the TPS3839L30DQNT while catering to specific voltage threshold requirements.

In conclusion, the TPS3839L30DQNT is a voltage supervisor that provides accurate voltage monitoring and control in various electronic systems. Its low quiescent current, precision voltage threshold, and small package size make it a versatile choice for applications requiring reliable voltage supervision.