TPS3307-18DG4

Product Overview

Category

The TPS3307-18DG4 belongs to the category of voltage supervisors or voltage monitors.

Use

It is primarily used for monitoring and supervising the voltage levels in electronic systems, ensuring proper operation and preventing damage due to voltage fluctuations.

Characteristics

• Voltage monitoring: The TPS3307-18DG4 can monitor a specific voltage level and provide an output signal when the voltage exceeds or falls below the set threshold.
• Adjustable threshold: The device allows users to set the desired voltage threshold according to their specific requirements.
• Low power consumption: It operates with low power consumption, making it suitable for battery-powered applications.
• Wide operating range: The TPS3307-18DG4 can operate within a wide voltage range, making it versatile for various applications.
• Reset function: It includes a reset pin that can be used to initiate a system reset when the monitored voltage deviates from the set threshold.

Package and Essence

The TPS3307-18DG4 comes in a small surface-mount package, specifically the SOIC-8 (Small Outline Integrated Circuit) package. Its essence lies in its ability to accurately monitor voltage levels and provide a reliable output signal.

Packaging/Quantity

The TPS3307-18DG4 is typically available in reels or tubes, depending on the manufacturer's packaging standards. The quantity per reel or tube may vary, but it is commonly available in quantities of 250 or 1000 units.

Specifications

• Supply voltage range: 2.5V to 18V
• Threshold voltage options: 1.8V, 2.5V, 3.3V, 5V
• Operating temperature range: -40°C to +125°C
• Quiescent current: 10µA (typical)
• Output type: Active low or active high
• Reset timeout period: Adjustable (typically 200ms)
• Accuracy: ±1.5% (typical)

Detailed Pin Configuration

The TPS3307-18DG4 has a total of 8 pins, which are as follows:

1. GND: Ground pin.
2. VCC: Supply voltage input.
3. MR: Manual reset input pin.
4. RESET: Output pin indicating the status of the monitored voltage.
5. THRESH: Threshold voltage selection pin.
6. SENSE: Voltage sense input pin.
7. NC: No connection pin.
8. GND: Ground pin.

Functional Features

Voltage Monitoring

The TPS3307-18DG4 continuously monitors the voltage level at the SENSE pin and compares it with the threshold voltage set by the THRESH pin. If the voltage exceeds or falls below the set threshold, the RESET pin changes its state, indicating an abnormal voltage condition.

Adjustable Threshold

By connecting the THRESH pin to different voltage levels, users can adjust the threshold voltage according to their specific requirements. This flexibility allows the device to be used in various applications.

Reset Function

The MR pin provides a manual reset option, allowing users to initiate a system reset when required. This feature ensures proper system operation after a voltage deviation event.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring helps prevent damage to electronic systems.
• Adjustable threshold voltage allows customization for different applications.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating range enables versatility in various voltage levels.
• Reset function ensures proper system operation after voltage deviations.

Disadvantages

• Limited threshold voltage options may not cover all application requirements.
• The SOIC-8 package may not be suitable for all PCB layouts.
• Lack of built-in hysteresis may result in oscillations near the threshold voltage.

Working Principles

The TPS3307-18DG4 operates based on a voltage comparator circuit. It compares the voltage at the SENSE pin with the threshold voltage set by the THRESH pin. If the monitored voltage exceeds or falls below the set threshold, the output at the RESET pin changes its state, indicating an abnormal voltage condition. The device continuously monitors the voltage and provides a reliable output signal for system protection.

Detailed Application Field Plans

The TPS3307-18DG4 finds applications in various fields where voltage monitoring is critical. Some of the potential application areas include:

1. Power supply units: Ensuring stable voltage levels in power supplies to protect sensitive components.
2. Industrial automation: Monitoring voltage levels in control systems to prevent malfunctions and ensure safety.
3. Automotive electronics: Protecting automotive electronic systems from voltage fluctuations and ensuring reliable operation.
4. Battery-powered devices: Monitoring battery voltage to prevent over-discharge and extend battery life.
5. Telecommunications equipment: Monitoring voltage levels in communication systems to maintain uninterrupted operation.

Detailed and Complete Alternative Models

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