LTC4411ES5#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

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

Package: SOT-23-5

Essence: The LTC4411ES5#TRPBF is a low voltage ideal diode controller designed to provide seamless switchover between two power sources. It ensures uninterrupted power supply and protects sensitive components from reverse current flow.

Packaging/Quantity: The LTC4411ES5#TRPBF is available in a SOT-23-5 package. It is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 7µA (typical)
• Reverse Leakage Current: 0.1µA (maximum)
• Overvoltage Lockout Threshold: 5.5V (typical)
• Undervoltage Lockout Threshold: 2.4V (typical)

Pin Configuration

The LTC4411ES5#TRPBF features a standard SOT-23-5 pin configuration:

```

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| | --| IN GND |-- Pin 1 --| OUT EN |-- Pin 2 --| V1 V2 |-- Pin 3 --| NC NC |-- Pin 4 --| V1IN V2IN|-- Pin 5 |___________| ```

Functional Features

• Seamless switchover between two power sources
• Prevents reverse current flow
• Low voltage drop across the ideal diode
• Fast response time for quick power source transition

Advantages and Disadvantages

Advantages: - Provides uninterrupted power supply during power source switchover - Protects sensitive components from reverse current flow - Low quiescent current consumption - Compact SOT-23-5 package for space-constrained applications

Disadvantages: - Limited input voltage range (2.5V to 5.5V) - Not suitable for high-power applications

Working Principles

The LTC4411ES5#TRPBF utilizes an internal MOSFET to emulate an ideal diode behavior. It monitors the voltages of two power sources, V1 and V2, and automatically switches between them based on their availability. When V1 is present and within the acceptable voltage range, the LTC4411ES5#TRPBF connects V1 to the load. If V1 drops below the undervoltage lockout threshold or becomes unavailable, the LTC4411ES5#TRPBF seamlessly switches to V2. It also prevents reverse current flow from V2 to V1, protecting the circuit from potential damage.

Detailed Application Field Plans

The LTC4411ES5#TRPBF is commonly used in various applications where uninterrupted power supply and protection against reverse current flow are critical. Some typical application fields include:

1. Battery-Powered Systems: The LTC4411ES5#TRPBF ensures a smooth transition between battery power and external power sources, preventing power interruptions and extending battery life.

2. Redundant Power Supplies: It is widely used in systems with redundant power supplies to provide seamless switchover between primary and backup power sources, ensuring continuous operation.

3. Portable Electronics: The low quiescent current and compact package make it suitable for portable devices such as smartphones, tablets, and wearable devices, where power efficiency and space constraints are important.

4. Industrial Control Systems: The LTC4411ES5#TRPBF is utilized in industrial control systems to protect sensitive components from reverse current flow and ensure uninterrupted operation during power source changes.

Detailed and Complete Alternative Models

1. LTC4412ES6#TRMPBF: Similar to the LTC4411ES5#TRPBF, but with a different pin configuration (SOT-23-6). It offers additional features such as adjustable undervoltage lockout threshold and overvoltage protection.

2. LTC4413ES6#TRMPBF: Another alternative with a similar pin configuration (SOT-23-6). It provides enhanced protection features like adjustable current limit and thermal shutdown.

3. LTC4414ES6#TRMPBF: This model offers a wider input voltage range (2.5V to 36V) and higher current handling capabilities compared to the LTC4411ES5#TRPBF. It is suitable for applications requiring higher power levels.

These alternative models provide flexibility and cater to specific application requirements beyond