TPS3306-20QDRG4Q1

Product Overview

Category

The TPS3306-20QDRG4Q1 belongs to the category of integrated circuits (ICs) and specifically falls under the family of voltage supervisors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems, ensuring their proper functioning and preventing potential damage caused by voltage fluctuations or failures.

Characteristics

• Voltage supervision range: The TPS3306-20QDRG4Q1 is designed to monitor voltages in the range of 0.8V to 5.5V.
• Low power consumption: It operates with low quiescent current, making it suitable for battery-powered applications.
• Adjustable reset threshold: The reset threshold voltage can be set using external resistors, allowing flexibility in different system requirements.
• Power-on reset delay: It provides a fixed delay time after power-up before asserting the reset signal, ensuring stable power supply conditions.

Package

The TPS3306-20QDRG4Q1 is available in a small outline package (SOIC) with 8 pins. This package offers ease of integration into various circuit designs and facilitates efficient heat dissipation.

Essence

The essence of the TPS3306-20QDRG4Q1 lies in its ability to provide reliable voltage monitoring and reset functions, contributing to the overall stability and robustness of electronic systems.

Packaging/Quantity

The TPS3306-20QDRG4Q1 is typically supplied in reels or tubes, depending on the manufacturer's packaging standards. The quantity per reel or tube may vary but is commonly around 250 units.

Specifications

• Supply voltage range: 2.7V to 5.5V
• Operating temperature range: -40°C to +125°C
• Reset threshold voltage accuracy: ±1.5%
• Quiescent current: 10µA (typical)
• Reset timeout period: 200ms (typical)

Detailed Pin Configuration

The TPS3306-20QDRG4Q1 has the following pin configuration:

1. VDD: Supply voltage input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Reset output
5. TH: Threshold adjust input
6. CT: Capacitor connection for reset timeout
7. NC: No connection (unused pin)
8. VOUT: Output voltage reference

Functional Features

Voltage Monitoring

The TPS3306-20QDRG4Q1 continuously monitors the supply voltage and compares it with the user-defined threshold voltage. If the supply voltage falls below the threshold, the reset output is asserted, indicating a power failure or unstable voltage condition.

Manual Reset

The manual reset input (MR) allows the user to force a system reset by pulling it low. This feature is useful during system testing or when a controlled restart is required.

Adjustable Threshold

By connecting an external resistor to the threshold adjust input (TH), the reset threshold voltage can be adjusted according to specific system requirements. This flexibility enables compatibility with a wide range of voltage levels.

Power-On Reset Delay

Upon power-up, the TPS3306-20QDRG4Q1 introduces a fixed delay before asserting the reset signal. This delay ensures that the power supply stabilizes before allowing the system to start operation, preventing premature resets due to transient voltage fluctuations.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality
• Low power consumption, suitable for battery-powered applications
• Adjustable reset threshold for flexibility
• Power-on reset delay for stable power supply conditions
• Compact package for easy integration

Disadvantages

• Limited to voltage monitoring and reset functions, lacks additional features found in more complex supervisory ICs
• Requires external resistors for threshold adjustment, adding complexity to the design

Working Principles

The TPS3306-20QDRG4Q1 operates based on a voltage comparator circuit. It compares the supply voltage with the user-defined threshold voltage set by the TH pin. If the supply voltage drops below the threshold, the internal logic asserts the reset output, indicating a power failure or unstable voltage condition.

The power-on reset delay ensures that the system remains in a reset state for a fixed period after power-up. This delay allows the power supply to stabilize before releasing the reset signal, preventing false resets caused by transient voltage fluctuations during startup.

Detailed Application Field Plans

The TPS3306-20QDRG4Q1 finds applications in various electronic systems where voltage monitoring and reliable reset functionality are crucial. Some of the common application fields include:

1. Microcontrollers and microprocessors: Ensuring stable power supply conditions and preventing data corruption during voltage fluctuations.
2. Industrial control systems: Protecting sensitive components