TPS3825-50DBVRG4

Product Overview

Category

The TPS3825-50DBVRG4 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: 2.5V to 6V
• Accuracy: ±1%
• Quiescent Current: 10µA (typical)
• Power-On Reset Delay: 200ms (typical)
• Watchdog Timer: Adjustable
• Operating Temperature Range: -40°C to +85°C

Package

The TPS3825-50DBVRG4 is available in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3825-50DBVRG4 lies in its ability to provide reliable voltage monitoring and reset generation in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 2.5V to 6V
• Threshold Voltage: 2.93V (typical)
• Reset Timeout Period: 50ms (minimum)
• Reset Output: Active Low
• Power-On Reset Delay: 200ms (typical)
• Watchdog Timer Range: 1.6s to 25.6s
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3825-50DBVRG4 has the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset)
4. VDD (Supply Voltage)

Functional Features

• Voltage Monitoring: The TPS3825-50DBVRG4 continuously monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Power-On Reset: Upon power-up, the device ensures a stable reset output for a specified delay period to allow the system to initialize properly.
• Watchdog Timer: This feature allows the user to configure a timeout period, and if the watchdog timer is not periodically reset, a reset signal is generated.
• Manual Reset: The MR pin provides an option for manual reset, allowing the user to initiate a system reset externally.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Accurate voltage monitoring with low quiescent current consumption.
• Small package size suitable for space-constrained applications.
• Adjustable watchdog timer provides flexibility in system design.

Disadvantages

• Limited reset timeout period may not be suitable for certain applications requiring longer reset delays.
• Lack of additional features such as adjustable threshold voltage or hysteresis.

Working Principles

The TPS3825-50DBVRG4 operates by comparing the supply voltage with the internally set threshold voltage. When the supply voltage drops below the threshold, the reset output becomes active low, indicating a system reset. The power-on reset delay ensures a stable reset output during power-up. The watchdog timer requires periodic resetting to prevent false resets, providing an additional layer of system reliability.

Detailed Application Field Plans

The TPS3825-50DBVRG4 finds application in various electronic systems that require reliable voltage monitoring and reset generation. Some potential application fields include:

1. Microcontrollers: Ensuring proper initialization and system stability during power-up.
2. Industrial Control Systems: Monitoring voltage levels to prevent damage to sensitive components.
3. Automotive Electronics: Providing reset functionality in automotive control units.
4. Battery-Powered Devices: Protecting against undervoltage conditions to prevent data loss or system malfunction.

Detailed and Complete Alternative Models

1. TPS3820-50DBVRG4: Similar voltage supervisor with a fixed reset timeout period of 50ms.
2. TPS3839K33DBVRG4: Voltage supervisor with adjustable threshold voltage and longer reset timeout period.
3. TPS3808G01DBVRG4: Supervisor with additional features like adjustable hysteresis and power-on reset delay.

(Note: The above alternative models are just a few examples and not an exhaustive list.)

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