LTC4225CUFD-2#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management and Control

Characteristics: - Dual Ideal Diode OR Controller - Low Voltage Drop - Reverse Current Blocking - Overvoltage Protection - Undervoltage Lockout - Fault Indication - Thermal Shutdown - Small Footprint

Package: 16-Lead QFN (Quad Flat No-Lead)

Essence: The LTC4225CUFD-2#TRPBF is an integrated circuit that functions as a dual ideal diode OR controller. It provides low voltage drop, reverse current blocking, overvoltage protection, undervoltage lockout, fault indication, and thermal shutdown features.

Packaging/Quantity: The LTC4225CUFD-2#TRPBF is available in a 16-Lead QFN package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.9V to 18V
• Operating Temperature Range: -40°C to 85°C
• Maximum Continuous Current: 6A
• Quiescent Current: 50µA
• Reverse Leakage Current: 1µA
• Fault Output Sink Current: 10mA
• Package Dimensions: 3mm x 3mm

Pin Configuration

The LTC4225CUFD-2#TRPBF has a 16-Lead QFN package with the following pin configuration:

1. VIN1: Input Voltage 1
2. VIN2: Input Voltage 2
3. GND: Ground
4. FLT1: Fault Indicator 1
5. FLT2: Fault Indicator 2
6. EN1: Enable Input 1
7. EN2: Enable Input 2
8. VOUT: Output Voltage
9. GATE1: Gate Drive 1
10. GATE2: Gate Drive 2
11. VCC: Supply Voltage
12. FLT1: Fault Indicator 1
13. FLT2: Fault Indicator 2
14. EN1: Enable Input 1
15. EN2: Enable Input 2
16. GND: Ground

Functional Features

• Dual Ideal Diode OR Controller: Allows seamless switching between two power sources.
• Low Voltage Drop: Minimizes power loss and improves efficiency.
• Reverse Current Blocking: Prevents current flow from the output to the input.
• Overvoltage Protection: Safeguards against excessive voltage levels.
• Undervoltage Lockout: Ensures proper operation within specified voltage range.
• Fault Indication: Provides indication of any fault conditions.
• Thermal Shutdown: Protects the device from overheating.
• Small Footprint: Compact package size for space-constrained applications.

Advantages and Disadvantages

Advantages: - Efficient power management and control. - Seamless switching between power sources. - Protection against overvoltage and reverse current. - Compact size for space-constrained applications.

Disadvantages: - Limited maximum continuous current (6A). - Operating temperature range may not be suitable for extreme environments.

Working Principles

The LTC4225CUFD-2#TRPBF operates by controlling the gates of external N-channel MOSFETs to emulate ideal diodes. It monitors the voltages at VIN1 and VIN2 inputs and ensures that the lower voltage source is selected as the primary power source. The device provides low voltage drop, reverse current blocking, overvoltage protection, undervoltage lockout, fault indication, and thermal shutdown features to ensure efficient and reliable power management.

Detailed Application Field Plans

The LTC4225CUFD-2#TRPBF can be used in various applications, including: 1. Redundant Power Supplies: Provides seamless switching between multiple power sources to ensure uninterrupted operation. 2. Battery Backup Systems: Enables efficient utilization of backup batteries and prevents reverse current flow. 3. Load Sharing: Facilitates load sharing between multiple power sources for increased reliability and efficiency. 4. Hot Swap Applications: Protects sensitive components during hot swapping by blocking reverse current and providing fault indication.

Detailed and Complete Alternative Models

1. LTC4225CUFD-1#TRPBF: Single-channel version of the LTC4225CUFD-2#TRPBF with similar features and specifications.
2. LTC4225CUFD-3#TRPBF: Triple-channel version of the LTC4225CUFD-2#TRPBF with additional power source selection capabilities.
3. LTC4225CUFD-4#TRPBF: Quad-channel version of the LTC4225CUFD-2#TRPBF with enhanced fault indication and protection features.

These alternative models offer similar functionality but with varying channel configurations and additional features to cater to different application