LT4320IDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Surge Suppressor

Characteristics: - Protects sensitive electronic devices from voltage surges - Regulates input voltage to a safe level - Prevents damage caused by overvoltage events - Suitable for various applications requiring surge protection

Package: DFN-10 (3mm x 3mm)

Essence: The LT4320IDD#TRPBF is a voltage surge suppressor IC designed to protect sensitive electronic devices from voltage surges and overvoltage events. It ensures that the input voltage remains within a safe range, preventing potential damage to connected components.

Packaging/Quantity: The LT4320IDD#TRPBF is available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: -40V to 60V
• Maximum Continuous Current: 2A
• Reverse Voltage Protection: Up to -40V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 50µA (typical)
• Fault Flag Output: Open-drain, active-low

Pin Configuration

The LT4320IDD#TRPBF features a DFN-10 package with the following pin configuration:

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| | --| VIN GND |-- Pin 1 --| VOUT FLT |-- Pin 2 --| EN NC |-- Pin 3 --| FB NC |-- Pin 4 --| SS NC |-- Pin 5 --| PG NC |-- Pin 6 --| NC NC |-- Pin 7 --| NC NC |-- Pin 8 --| NC NC |-- Pin 9 --| NC NC |-- Pin 10 |___________| ```

Functional Features

1. Voltage Surge Protection: The LT4320IDD#TRPBF safeguards connected devices by regulating the input voltage and preventing voltage surges from reaching critical levels.

2. Reverse Voltage Protection: It provides reverse voltage protection, ensuring that the device remains unaffected by reverse polarity connections.

3. Fault Flag Output: The IC features a fault flag output pin that indicates when a fault condition occurs, allowing for easy monitoring and system diagnostics.

4. Low Quiescent Current: With a low quiescent current of only 50µA, the LT4320IDD#TRPBF minimizes power consumption and is suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Effective voltage surge protection - Reverse voltage protection - Fault flag output for easy monitoring - Low quiescent current for power efficiency - Compact DFN-10 package

Disadvantages: - Limited maximum continuous current (2A)

Working Principles

The LT4320IDD#TRPBF operates by continuously monitoring the input voltage. When the voltage exceeds a predefined threshold, it activates internal circuitry to regulate the voltage and prevent it from reaching dangerous levels. The IC also incorporates reverse voltage protection to safeguard against reverse polarity connections.

Application Field Plans

The LT4320IDD#TRPBF can be used in various applications where voltage surge protection is required. Some potential application fields include:

1. Power Supplies: Protecting sensitive components in power supply circuits from voltage surges.
2. Industrial Control Systems: Safeguarding control systems from voltage transients and overvoltage events.
3. Automotive Electronics: Providing surge protection for automotive electronic systems, such as infotainment systems and engine control units.
4. Telecommunications: Protecting telecom equipment from voltage surges caused by lightning strikes or power grid fluctuations.

Alternative Models

1. Texas Instruments TPS26600: A similar voltage surge suppressor IC with a higher maximum continuous current of 3A.
2. Analog Devices LT4356: Offers additional features such as overvoltage protection and adjustable output voltage clamping.

These alternative models can be considered based on specific application requirements and desired features.

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