TPS3809L30MDBVREP

Product Overview

Category

The TPS3809L30MDBVREP belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage threshold: 3.0V
• Supply voltage range: 1.6V to 6.0V
• Low quiescent current: 2.5µA (typical)
• Open-drain output
• Adjustable delay time
• Power-on reset generator
• Manual reset input
• Small package size

Package

The TPS3809L30MDBVREP is available in a small SOT-23 package.

Essence

The essence of the TPS3809L30MDBVREP is its ability to monitor and control voltage levels, ensuring stable operation of electronic systems.

Packaging/Quantity

The TPS3809L30MDBVREP is typically packaged in reels, with 3000 units per reel.

Specifications

• Voltage threshold: 3.0V
• Supply voltage range: 1.6V to 6.0V
• Quiescent current: 2.5µA (typical)
• Operating temperature range: -40°C to +85°C
• Output type: Open-drain
• Delay time options: Adjustable
• Reset timeout period: 200ms (typical)

Detailed Pin Configuration

The TPS3809L30MDBVREP has the following pin configuration:

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

Functional Features

Power-On Reset Generator

The TPS3809L30MDBVREP includes a power-on reset generator that ensures proper initialization of the system by holding it in reset until the supply voltage reaches the specified threshold.

Manual Reset Input

The manual reset (MR) input allows for an external signal to reset the system, overriding the power-on reset function.

Adjustable Delay Time

The delay time before asserting the reset output can be adjusted using an external capacitor.

Open-Drain Output

The open-drain output provides flexibility in connecting to different systems, allowing for both active-low and active-high reset configurations.

Advantages and Disadvantages

Advantages

• Low quiescent current ensures minimal power consumption.
• Wide supply voltage range allows for compatibility with various systems.
• Small package size enables space-saving designs.
• Adjustable delay time provides flexibility in system initialization.

Disadvantages

• Lack of integrated watchdog timer for additional system monitoring.
• Limited voltage threshold options may not suit all applications.

Working Principles

The TPS3809L30MDBVREP operates by continuously monitoring the supply voltage. When the voltage drops below the specified threshold, the reset output is asserted, indicating a power-on reset condition. The reset output remains asserted until the supply voltage rises above the threshold and the delay time elapses.

Detailed Application Field Plans

The TPS3809L30MDBVREP finds application in various electronic systems where voltage monitoring and control are critical. Some specific application fields include:

1. Battery-powered devices: Ensuring proper operation and preventing damage due to low battery voltage.
2. Microcontrollers and microprocessors: Providing reliable reset functionality during power-up and voltage fluctuations.
3. Industrial automation systems: Monitoring power supply integrity to prevent data loss or equipment malfunction.
4. Automotive electronics: Safeguarding sensitive components from voltage variations and ensuring proper system initialization.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TPS3809L30MDBVREP include:

1. MAX809: Voltage supervisors with adjustable threshold and integrated watchdog timer.
2. ADM6315: Microprocessor supervisory circuits with adjustable reset timeout period.
3. MCP101: Low-power voltage detectors with various threshold options.

These alternative models provide a range of features and specifications to suit different application requirements.

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