LTC4419IMSE#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - Low voltage ideal diode controller - Provides reverse polarity protection for power supplies - Controls the forward voltage drop across an external N-channel MOSFET - Prevents reverse current flow from a power source to a load

Package: MSOP-10

Essence: The LTC4419IMSE#TRPBF is an integrated circuit that serves as a low voltage ideal diode controller. It ensures reverse polarity protection for power supplies by controlling the forward voltage drop across an external N-channel MOSFET. This prevents any reverse current flow from a power source to a load.

Packaging/Quantity: The LTC4419IMSE#TRPBF is available in a MSOP-10 package. The quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 15µA (typical)
• Reverse Leakage Current: 1µA (maximum)
• Overvoltage Lockout Threshold: 5.5V (typical)
• Undervoltage Lockout Threshold: 2.4V (typical)
• Fault Output Voltage: 0.4V (typical)

Pin Configuration

The LTC4419IMSE#TRPBF has the following pin configuration:

```

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| | --| EN FLT |-- --| GATE GND |-- --| VIN VOUT|-- |___________| ```

• EN: Enable Pin
• FLT: Fault Output Pin
• GATE: Gate Drive Output Pin
• GND: Ground Pin
• VIN: Input Voltage Pin
• VOUT: Output Voltage Pin

Functional Features

1. Reverse Polarity Protection: The LTC4419IMSE#TRPBF ensures reverse polarity protection by controlling the forward voltage drop across an external N-channel MOSFET. This prevents any reverse current flow from a power source to a load.

2. Low Voltage Operation: With an input voltage range of 2.5V to 5.5V, the LTC4419IMSE#TRPBF is suitable for low voltage applications.

3. Fault Detection: The fault output pin (FLT) provides a signal indicating when a fault condition, such as reverse polarity or overvoltage, is detected.

4. Quiescent Current: The device has a low quiescent current of 15µA, minimizing power consumption.

Advantages and Disadvantages

Advantages: - Provides reverse polarity protection for power supplies - Low voltage operation - Fault detection feature - Low quiescent current

Disadvantages: - Requires an external N-channel MOSFET for operation

Working Principles

The LTC4419IMSE#TRPBF works by controlling the forward voltage drop across an external N-channel MOSFET. When the input voltage (VIN) is applied correctly, the controller allows the MOSFET to conduct, enabling power flow from the input to the output (VOUT). In case of reverse polarity or overvoltage, the controller blocks the MOSFET, preventing any reverse current flow.

Detailed Application Field Plans

The LTC4419IMSE#TRPBF can be used in various applications where reverse polarity protection and power management are required. Some potential application fields include:

1. Battery-Powered Devices: The controller can protect battery-powered devices from damage due to reverse polarity connection or overvoltage events.

2. Automotive Electronics: It can be used in automotive electronics to prevent reverse current flow and protect sensitive components.

3. Power Supplies: The LTC4419IMSE#TRPBF can be incorporated into power supply designs to ensure safe and reliable operation.

4. Industrial Control Systems: It is suitable for industrial control systems where reverse polarity protection is crucial to avoid equipment damage.

Detailed and Complete Alternative Models

1. LTC4417: Similar to LTC4419IMSE#TRPBF, but with a different pin configuration (DFN-10 package).
2. LTC4359: Provides similar functionality with additional features like adjustable undervoltage lockout and overvoltage clamp.
3. MAX40200: Offers reverse voltage protection and low quiescent current in a smaller SOT23 package.

These alternative models provide similar functionalities and can be considered as alternatives to the LTC4419IMSE#TRPBF based on specific requirements and design constraints.

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