TPS3307-18DRG4

Product Overview

Category

The TPS3307-18DRG4 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: 1.8V
• Low quiescent current: 10µA (typical)
• Wide operating temperature range: -40°C to +125°C
• Adjustable reset time delay
• Power-on reset generator with fixed delay time
• Manual reset input
• Watchdog timer

Package

The TPS3307-18DRG4 is available in a small SOT-23 package.

Essence

The essence of the TPS3307-18DRG4 is its ability to provide accurate voltage monitoring and reset generation for microcontrollers, DSPs, and other digital systems.

Packaging/Quantity

The TPS3307-18DRG4 is typically packaged in reels, with 3000 units per reel.

Specifications

• Supply voltage range: 1.5V to 6.5V
• Reset threshold accuracy: ±1.5%
• Watchdog timeout period: 1.6s (typical)
• Manual reset input voltage: 0.3V (minimum), VDD (maximum)

Detailed Pin Configuration

The TPS3307-18DRG4 has the following pin configuration:

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

Functional Features

1. Voltage Monitoring: The TPS3307-18DRG4 continuously monitors the supply voltage and provides a reset signal when it falls below the specified threshold.
2. Power-On Reset: It generates a fixed delay time for the power-on reset signal, ensuring proper initialization of the system.
3. Manual Reset: The manual reset input allows for an external reset signal to be applied, overriding the internal reset generation.
4. Watchdog Timer: The integrated watchdog timer ensures that the system is functioning properly by periodically resetting it if no activity is detected.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring
• Low quiescent current consumption
• Wide operating temperature range
• Adjustable reset time delay
• Small package size

Disadvantages

• Limited reset threshold accuracy
• Single voltage supervision level (1.8V)

Working Principles

The TPS3307-18DRG4 operates by continuously comparing the supply voltage with a fixed threshold. If the voltage falls below this threshold, the reset output is activated, signaling a low-voltage condition. The power-on reset generator ensures a proper system startup by providing a fixed delay before releasing the reset signal. The watchdog timer monitors system activity and resets the system if no activity is detected within a specified timeout period.

Detailed Application Field Plans

The TPS3307-18DRG4 finds applications in various fields, including:

1. Microcontroller Systems: It ensures reliable operation of microcontroller-based systems by monitoring the supply voltage and generating reset signals when necessary.
2. Digital Signal Processors (DSPs): The TPS3307-18DRG4 provides voltage supervision for DSPs, preventing malfunctions due to voltage fluctuations.
3. Industrial Control Systems: It is used in industrial control systems to monitor and control voltage levels, ensuring stable operation of critical equipment.
4. Automotive Electronics: The TPS3307-18DRG4 is suitable for automotive applications where voltage monitoring and reset generation are essential for safe and reliable operation.

Detailed and Complete Alternative Models

1. TPS3307-33DRG4: Similar to TPS3307-18DRG4, but with a higher voltage supervision level of 3.3V.
2. TPS3307-25DRG4: Similar to TPS3307-18DRG4, but with a higher voltage supervision level of 2.5V.
3. TPS3307-15DRG4: Similar to TPS3307-18DRG4, but with a lower voltage supervision level of 1.5V.

These alternative models provide different voltage supervision levels to cater to specific system requirements.

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