TPS3305-33DGN

Product Overview

Category

The TPS3305-33DGN 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: The TPS3305-33DGN ensures that the voltage remains within a specified range.
• Reset functionality: It provides a reset signal when the voltage falls below or exceeds the desired threshold.
• Low power consumption: The device operates with low power requirements, making it suitable for battery-powered applications.
• Wide operating temperature range: It can function reliably across a wide temperature range, enhancing its versatility.
• Adjustable threshold: The voltage threshold can be adjusted to suit specific system requirements.

Package

The TPS3305-33DGN comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of the TPS3305-33DGN lies in its ability to monitor and regulate voltage levels, ensuring the stability and proper functioning of electronic systems.

Packaging/Quantity

The TPS3305-33DGN is typically packaged in reels, with each reel containing a specific quantity of devices. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply voltage range: 2.5V to 6.5V
• Threshold voltage: 3.3V
• Operating temperature range: -40°C to +125°C
• Quiescent current: 10µA (typical)
• Output type: Active-low push-pull

Detailed Pin Configuration

The TPS3305-33DGN has the following pin configuration:

1. GND: Ground connection
2. VDD: Positive supply voltage input
3. MR: Manual reset input
4. RESET: Active-low reset output
5. TH: Threshold voltage adjustment pin

Functional Features

• Voltage monitoring: The TPS3305-33DGN continuously monitors the input voltage and compares it to the threshold voltage.
• Reset signal generation: When the input voltage falls below or exceeds the threshold, the device generates a reset signal to initiate system reset or shutdown.
• Adjustable threshold: The threshold voltage can be adjusted using an external resistor, allowing customization for different applications.
• Manual reset capability: The MR pin provides the option for manual reset, enabling system control in specific scenarios.

Advantages and Disadvantages

Advantages

• Reliable voltage supervision ensures system stability.
• Low power consumption prolongs battery life in portable devices.
• Wide operating temperature range enables usage in various environments.
• Adjustable threshold accommodates different voltage requirements.
• Manual reset capability offers flexibility in system control.

Disadvantages

• Limited to voltage monitoring and reset functionality, may not suit complex system requirements.
• Requires additional external components for threshold adjustment.

Working Principles

The TPS3305-33DGN operates by comparing the input voltage with the threshold voltage set by the TH pin. If the input voltage falls below or exceeds this threshold, the device generates a reset signal, initiating system reset or shutdown. The adjustable threshold feature allows customization for specific voltage requirements.

Detailed Application Field Plans

The TPS3305-33DGN finds application in various electronic systems that require voltage monitoring and reset functionality. Some potential application fields include:

1. Power supply units: Ensuring stable voltage levels in power supplies to prevent damage to connected devices.
2. Microcontrollers: Monitoring voltage to protect sensitive microcontroller circuits from voltage fluctuations.
3. Industrial automation: Maintaining voltage stability in industrial automation systems to prevent malfunctions and downtime.
4. Automotive electronics: Monitoring voltage in automotive systems to safeguard critical components and ensure reliable operation.

Detailed and Complete Alternative Models

1. TPS3305-33DBVR: SOT-23 package, similar specifications to TPS3305-33DGN.
2. TPS3808G01: Adjustable threshold voltage supervisor with additional power-on reset functionality.
3. MAX823: Low-power voltage monitor with adjustable threshold and manual reset capability.

These alternative models offer similar voltage monitoring and reset features, catering to different application requirements.

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