LTC4418CUF#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Voltage Ideal Diode Controller
• Package: 16-Lead QFN (Quad Flat No-Lead)
• Essence: Controls the flow of power between two sources
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 36V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 20µA
• Reverse Leakage Current: 1µA
• Overvoltage Lockout Threshold: 4.6V
• Undervoltage Lockout Threshold: 2.5V
• Fault Output Voltage: 5V
• Fault Output Current: 10mA

Pin Configuration

The LTC4418CUF#TRPBF has a total of 16 pins arranged as follows:

1. GATE1: Controls the gate voltage of the external N-channel MOSFET connected to Source 1.
2. GATE2: Controls the gate voltage of the external N-channel MOSFET connected to Source 2.
3. VIN1: Input voltage from Source 1.
4. VIN2: Input voltage from Source 2.
5. FLT: Fault output pin indicating overvoltage or undervoltage conditions.
6. GND: Ground reference for the IC.
7. VCC: Supply voltage for the IC.
8. VOUT: Output voltage to the load.

Functional Features

• Controls the power flow between two input sources.
• Provides seamless switchover between sources without interruption.
• Monitors the input voltages and activates the appropriate MOSFET to ensure power supply continuity.
• Protects against overvoltage and undervoltage conditions.
• Provides a fault output signal to indicate abnormal voltage levels.

Advantages

• Enables reliable and efficient power management in systems with multiple power sources.
• Prevents reverse current flow, protecting sensitive components.
• Low quiescent current minimizes power consumption.
• Wide input voltage range allows compatibility with various power sources.
• Compact package size saves board space.

Disadvantages

• Requires external N-channel MOSFETs for power switching.
• Limited fault output current may not be suitable for certain applications.
• Not suitable for high-power applications due to its small package size.

Working Principles

The LTC4418CUF#TRPBF is an ideal diode controller that utilizes external N-channel MOSFETs to control the power flow between two input sources. It continuously monitors the input voltages and activates the appropriate MOSFET to ensure uninterrupted power supply to the load. The device also incorporates overvoltage and undervoltage lockout thresholds to protect against abnormal voltage levels. In case of a fault, the FLT pin provides a signal indicating the presence of an overvoltage or undervoltage condition.

Application Field Plans

The LTC4418CUF#TRPBF finds applications in various fields where seamless power source switchover and protection against abnormal voltage levels are required. Some potential application areas include:

1. Battery-powered devices: Ensures continuous power supply by seamlessly switching between battery and external power sources.
2. Automotive electronics: Protects sensitive components from voltage fluctuations during engine start-up or alternator load changes.
3. Industrial automation: Enables reliable power management in systems with redundant power supplies.
4. Telecommunications equipment: Provides uninterrupted power supply during power source failures or maintenance.

Alternative Models

1. LTC4417CUF#TRPBF: Similar functionality but with a different pin configuration.
2. LTC4419CUF#TRPBF: Higher fault output current capability for specific applications.
3. LTC4416CUF#TRPBF: Lower quiescent current for ultra-low power applications.

Note: The above alternative models are from the same product family and offer similar features with slight variations in specifications.

This concludes the encyclopedia entry for LTC4418CUF#TRPBF, a high voltage ideal diode controller used in power management applications.