TPS3820-33DBVT

Product Overview

Category

The TPS3820-33DBVT belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage supervision range: 3.3V
• Low quiescent current: 10µA (typical)
• Precision voltage threshold: ±2%
• Power-on reset delay time: 200ms (typical)
• Watchdog timer: 1.6s (typical)

Package

The TPS3820-33DBVT is available in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3820-33DBVT is its ability to provide accurate voltage monitoring and reset generation in electronic systems.

Packaging/Quantity

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

Specifications

• Supply voltage range: 2.5V to 10V
• Operating temperature range: -40°C to +85°C
• Output type: Active low push-pull
• Reset threshold voltage: 3.08V (typical)
• Reset timeout period: 140ms to 1120ms (programmable)

Detailed Pin Configuration

The TPS3820-33DBVT has the following pin configuration:

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

Functional Features

• Accurate voltage monitoring: The TPS3820-33DBVT ensures that the voltage remains within the specified range by continuously monitoring it.
• Power-on reset: It generates a reset signal when the supply voltage rises above the threshold, ensuring proper initialization of the system.
• Watchdog timer: The integrated watchdog timer monitors the system's activity and generates a reset signal if it detects any abnormal behavior.

Advantages and Disadvantages

Advantages

• Low quiescent current consumption, making it suitable for battery-powered applications.
• Small package size allows for easy integration into space-constrained designs.
• Accurate voltage threshold ensures reliable voltage monitoring.

Disadvantages

• Limited programmability options for the reset timeout period.
• May not be suitable for applications requiring a wide supply voltage range.

Working Principles

The TPS3820-33DBVT operates by comparing the supply voltage with a precise threshold. When the voltage rises above the threshold, the device generates a reset signal to ensure proper system initialization. It also includes a watchdog timer that monitors the system's activity and generates a reset signal if it detects any abnormal behavior.

Detailed Application Field Plans

The TPS3820-33DBVT finds applications in various electronic systems where accurate voltage monitoring and reset generation are critical. Some of the potential application fields include:

1. Microcontrollers: Ensuring reliable operation and protection against voltage fluctuations.
2. Industrial automation: Monitoring power supply integrity and preventing system malfunctions.
3. Automotive electronics: Providing voltage supervision for critical components and systems.
4. Medical devices: Ensuring stable power supply and safe operation of medical equipment.

Detailed and Complete Alternative Models

1. TPS3820-25DBVT: Similar to TPS3820-33DBVT but with a lower voltage threshold of 2.5V.
2. TPS3820-50DBVT: Similar to TPS3820-33DBVT but with a higher voltage threshold of 5.0V.
3. TPS3820-01DBVT: Similar to TPS3820-33DBVT but with an adjustable reset timeout period.

These alternative models offer flexibility in voltage thresholds and reset timeout periods, catering to different application requirements.

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