TPS3824-33DBVRG4

Product Overview

Category

The TPS3824-33DBVRG4 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 supervision range: 3.3V
• Low quiescent current: 10µA (typical)
• Precision voltage monitor: ±2%
• Manual reset input
• Power-on reset delay time: 200ms (typical)
• Watchdog timer: 1.6s (typical)

Package

The TPS3824-33DBVRG4 comes in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3824-33DBVRG4 lies in its ability to provide accurate voltage monitoring and reset generation for electronic systems.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply voltage range: 2.5V to 10V
• Operating temperature range: -40°C to +85°C
• Reset threshold voltage: 3.08V (typical)
• Reset timeout period: 140ms (typical)
• Manual reset input voltage: 0.7V (typical)
• Watchdog timeout period: 1.6s (typical)

Detailed Pin Configuration

The TPS3824-33DBVRG4 has the following pin configuration:

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

Functional Features

1. Voltage Monitoring: The TPS3824-33DBVRG4 continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Manual Reset: The manual reset input allows for an external reset signal to be applied, overriding the voltage monitoring function.
3. Power-On Reset Delay: Upon power-up, the TPS3824-33DBVRG4 introduces a delay before generating the reset signal, ensuring stable power supply conditions.
4. Watchdog Timer: This feature enables the device to detect and reset the system if it becomes unresponsive within the specified timeout period.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring with low quiescent current consumption.
• Small package size suitable for space-constrained applications.
• Manual reset input provides flexibility in system control.
• Power-on reset delay ensures stable power supply conditions.
• Watchdog timer enhances system reliability.

Disadvantages

• Limited voltage supervision range (specifically designed for 3.3V systems).
• Not suitable for applications requiring higher voltage thresholds.

Working Principles

The TPS3824-33DBVRG4 operates by continuously comparing the supply voltage against the preset threshold. If the voltage drops below the threshold, the device generates a reset signal, which can be used to initiate system recovery or perform other necessary actions. The manual reset input allows for external control over the reset function. Additionally, the power-on reset delay ensures that the reset signal is not generated immediately upon power-up, allowing time for stable power supply conditions to be established.

Detailed Application Field Plans

The TPS3824-33DBVRG4 finds application in various electronic systems where accurate voltage monitoring and reset generation are critical. Some specific application fields include:

1. Microcontrollers: Ensuring reliable operation and preventing data corruption during power fluctuations.
2. Industrial Control Systems: Providing fault detection and system recovery capabilities.
3. Automotive Electronics: Monitoring critical voltage levels to prevent damage to sensitive components.
4. Battery-Powered Devices: Preserving battery life by initiating power-saving modes during low voltage conditions.

Detailed and Complete Alternative Models

1. TPS3820-33DBVRG4: Similar to the TPS3824-33DBVRG4, but with a different package (SOT-23) and slightly different specifications.
2. TPS3839K33DBVRG4: Offers a wider voltage supervision range (3.3V to 10V) and additional features such as adjustable reset timeout period.
3. TPS3808G33DBVRG4: Provides a higher precision voltage monitor (±1%) and adjustable reset threshold voltage.

(Note: These alternative models are just a few examples; there are several other options available in the market.)

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