TPS3809K33MDBVREP

Product Overview

Category

The TPS3809K33MDBVREP 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: 3.3V
• Supply voltage range: 1.6V to 6V
• Low quiescent current: 2.5µA (typical)
• Open-drain output
• Adjustable delay time
• Power-on reset generator

Package

The TPS3809K33MDBVREP comes in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3809K33MDBVREP lies in its ability to provide accurate voltage monitoring and reset generation in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with 3000 units per reel.

Specifications

• Operating temperature range: -40°C to +85°C
• Accuracy: ±1.5%
• Reset threshold accuracy: ±1.5%
• Delay time options: 100ms, 200ms, 400ms, or 800ms
• Output type: Active-low, open-drain

Detailed Pin Configuration

The TPS3809K33MDBVREP has the following pin configuration:

1. GND (Ground)
2. VDD (Supply voltage)
3. MR (Manual reset input)
4. RESET (Reset output)

Functional Features

1. Voltage Monitoring: The TPS3809K33MDBVREP continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Manual Reset Input: The MR pin allows for manual reset control, enabling system initialization or recovery.
3. Adjustable Delay Time: The delay time can be configured to provide a specific duration before generating the reset signal.
4. Power-On Reset: The TPS3809K33MDBVREP includes a power-on reset generator, ensuring proper system initialization during power-up.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring
• Low quiescent current consumption
• Adjustable delay time for flexibility
• Small package size suitable for space-constrained applications

Disadvantages

• Limited voltage threshold options (3.3V in this case)
• Open-drain output may require additional circuitry for certain applications

Working Principles

The TPS3809K33MDBVREP operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the specified threshold, the reset output is activated. The delay time can be adjusted to allow for stable power supply conditions before generating the reset signal. The open-drain output requires an external pull-up resistor to provide a logic-high level when not active.

Detailed Application Field Plans

The TPS3809K33MDBVREP finds application in various electronic systems where accurate voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers: Ensuring proper initialization and reliable operation of microcontroller-based systems.
2. Industrial Control Systems: Monitoring power supply voltages in industrial control systems to prevent malfunctions or data corruption.
3. Automotive Electronics: Providing voltage supervision in automotive electronics to ensure safe and reliable operation.
4. Battery-Powered Devices: Monitoring battery voltage levels in portable devices to prevent over-discharge and protect battery life.

Detailed and Complete Alternative Models

1. TPS3808G01: Similar voltage supervisor with a fixed 3.08V threshold and adjustable delay time.
2. TPS3836: Voltage supervisor with a higher threshold voltage of 3.6V and adjustable delay time.
3. TPS3890: Voltage supervisor with a wide supply voltage range of 1.2V to 6V and adjustable delay time.

(Note: This is not an exhaustive list, and there may be other alternative models available in the market.)

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