TPS3809K33DBVTG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors voltage levels to ensure proper system operation - Provides reset signals during power-up, power-down, and brownout conditions - Offers adjustable threshold voltage for flexibility in different applications

Package: SOT-23 (5-Pin)

Essence: The TPS3809K33DBVTG4 is a voltage supervisor IC that monitors the voltage levels of a system and provides reset signals during power-up, power-down, and brownout conditions. It is commonly used in various electronic devices to ensure proper system operation.

Packaging/Quantity: The TPS3809K33DBVTG4 is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.3V, 3.63V, 4.38V, 4.63V, 4.75V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 7µA (typical)
• Reset Timeout Period: 200ms (typical)

Pin Configuration

The TPS3809K33DBVTG4 has the following pin configuration:

```

---

| | --| VDD | --| GND | --| MR | --| RESET | --| NRESET | |___________| ```

• VDD: Power supply input
• GND: Ground reference
• MR: Manual reset input (active-low)
• RESET: Reset output
• NRESET: Active-low open-drain reset output

Functional Features

1. Voltage Monitoring: The TPS3809K33DBVTG4 continuously monitors the voltage levels of the system to ensure they remain within the specified range.
2. Reset Generation: It generates reset signals during power-up, power-down, and brownout conditions to initiate a proper system reset.
3. Adjustable Threshold Voltage: The IC offers multiple threshold voltage options, allowing flexibility in different applications.

Advantages and Disadvantages

Advantages: - Accurate voltage monitoring for reliable system operation - Adjustable threshold voltage for versatile applications - Low quiescent current consumption - Small package size for space-constrained designs

Disadvantages: - Limited number of threshold voltage options - Lack of advanced features compared to more specialized voltage supervisors

Working Principles

The TPS3809K33DBVTG4 operates by comparing the monitored voltage level with the set threshold voltage. If the voltage falls below the threshold, indicating a power loss or brownout condition, the IC generates a reset signal to initiate a system reset. The threshold voltage can be adjusted using external resistors to suit specific application requirements.

Application Field Plans

The TPS3809K33DBVTG4 is widely used in various electronic devices and systems that require reliable voltage monitoring and reset functionality. Some common application fields include:

1. Microcontrollers: Ensuring proper system initialization and reset during power-up and brownout conditions.
2. Embedded Systems: Providing reliable reset signals to prevent system malfunctions caused by power fluctuations.
3. Industrial Automation: Monitoring voltage levels in control systems to maintain stable operation and prevent data corruption.
4. Consumer Electronics: Protecting sensitive components from voltage variations and ensuring safe operation.

Alternative Models

1. TPS3808G01DBVR: Similar voltage supervisor IC with fixed threshold voltage options.
2. TPS3839K33DBVT: Voltage supervisor IC with adjustable threshold voltage and additional power-on reset delay feature.
3. MAX809R: Alternative voltage supervisor IC from Maxim Integrated with similar functionality.

These alternative models offer similar voltage monitoring and reset capabilities, providing options for different application requirements.

Word count: 511 words