LTC4419CMSE#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High voltage ideal diode controller - Provides seamless switchover between two power sources - Prevents reverse current flow - Protects sensitive components from damage

Package: MSOP-10E

Essence: The LTC4419CMSE#TRPBF is an integrated circuit designed to control the operation of an ideal diode. It ensures uninterrupted power supply by seamlessly switching between two power sources and preventing reverse current flow.

Packaging/Quantity: The LTC4419CMSE#TRPBF is available in a MSOP-10E package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V to 40V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 20µA (typical)
• Reverse Leakage Current: 1µA (maximum)
• Overvoltage Lockout Threshold: 0.4V (typical)
• Fault Output Voltage: 5V (typical)

Pin Configuration

The LTC4419CMSE#TRPBF has the following pin configuration:

```

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| | --| EN GATE |-- --| VIN SW |-- --| VOUT FLT |-- --| GND |-- |_______________| ```

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

Functional Features

1. Seamless Switchover: The LTC4419CMSE#TRPBF ensures smooth transition between two power sources, eliminating any interruption in the power supply.
2. Reverse Current Protection: It prevents reverse current flow, protecting sensitive components from damage.
3. Low Quiescent Current: The IC has a low quiescent current of 20µA, minimizing power consumption.
4. Fault Indicator: The FLT pin provides a fault indication when an overvoltage condition is detected.

Advantages and Disadvantages

Advantages: - Seamless switchover between power sources - Reverse current protection - Low quiescent current - Fault indication for overvoltage conditions

Disadvantages: - Limited to a maximum input voltage of 40V - Requires external components for complete circuit implementation

Working Principles

The LTC4419CMSE#TRPBF operates by monitoring the voltages at the VIN and VOUT pins. When the voltage at VIN drops below the voltage at VOUT, the IC turns on the internal MOSFET, allowing current to flow from VIN to VOUT. This ensures uninterrupted power supply to the load. If the voltage at VIN exceeds the voltage at VOUT, the IC turns off the MOSFET, preventing reverse current flow.

Detailed Application Field Plans

The LTC4419CMSE#TRPBF finds applications in various fields, including:

1. Battery-Powered Systems: It can be used in portable devices, such as smartphones and tablets, to switch between battery power and external power sources.
2. Uninterruptible Power Supplies (UPS): The IC ensures seamless switchover between the main power supply and backup batteries during power outages.
3. Automotive Electronics: It can be employed in automotive systems to switch between the vehicle's battery and an auxiliary power source.

Detailed and Complete Alternative Models

1. LTC4418: Similar to LTC4419CMSE#TRPBF, but with a different pin configuration.
2. MAX40200: Provides similar functionality with additional features like adjustable overvoltage lockout threshold.

These alternative models offer similar functionality and can be considered as alternatives to the LTC4419CMSE#TRPBF based on specific requirements and design constraints.

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