TPS3839K33DBZR

Product Overview

Category

The TPS3839K33DBZR 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 TPS3839K33DBZR comes in a small SOT-23 package.

Essence

The essence of the TPS3839K33DBZR is its ability to provide reliable voltage monitoring and reset generation in various applications.

Packaging/Quantity

This product is typically sold in reels, with each reel containing a specific quantity of TPS3839K33DBZR units.

Specifications

• Supply Voltage Range: 1.8V to 10V
• Reset Threshold Voltage: Adjustable from 2.93V to 3.08V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active-Low, Open-Drain

Detailed Pin Configuration

The TPS3839K33DBZR 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 the reset signal when the monitored voltage falls below the threshold.

Functional Features

• Under-Voltage Monitoring: The TPS3839K33DBZR continuously monitors the input voltage and generates a reset signal when it falls below the set threshold.
• Adjustable Threshold: The reset threshold voltage can be adjusted within a specified range to suit different system requirements.
• Power-On Reset Delay: The device includes a built-in delay to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages

• Low-power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range allows compatibility with various systems.
• Adjustable reset threshold provides flexibility in voltage monitoring.
• Small package size enables space-saving designs.

Disadvantages

• Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.
• Limited output options (only active-low, open-drain) may not be suitable for all applications.

Working Principles

The TPS3839K33DBZR operates by comparing the input voltage with the set threshold. When the voltage drops below the threshold, the device generates a reset signal on the RESET pin. This signal can be used to initiate system resets or perform other necessary actions.

Detailed Application Field Plans

The TPS3839K33DBZR finds applications in various fields, including:

1. Battery-Powered Devices: It ensures proper operation by monitoring the battery voltage and initiating resets when necessary.
2. Industrial Control Systems: The voltage supervisor helps maintain stable operation in critical control systems.
3. Automotive Electronics: It plays a vital role in monitoring voltage levels in automotive electronic systems, ensuring reliable performance.

Detailed and Complete Alternative Models

1. TPS3839L30DBZR: Similar to TPS3839K33DBZR but with a different reset threshold voltage (3.0V).
2. TPS3839M25DBZR: Similar to TPS3839K33DBZR but with a different reset threshold voltage (2.5V).
3. TPS3839N28DBZR: Similar to TPS3839K33DBZR but with a different reset threshold voltage (2.8V).

These alternative models provide similar functionality but with varying reset threshold voltages to cater to different voltage monitoring requirements.

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