LTC4225IUFD-2#PBF

Product Overview

Category

The LTC4225IUFD-2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power supply and protection applications in various electronic systems. It provides a comprehensive solution for managing power sources and protecting sensitive components from potential damage.

Characteristics

• Integrated power management and protection functions
• High efficiency and low power consumption
• Wide input voltage range
• Overvoltage and undervoltage protection
• Current limiting and fault detection capabilities

Package

The LTC4225IUFD-2#PBF is available in a small form factor package, specifically a 16-pin QFN (Quad Flat No-Lead) package. This package offers excellent thermal performance and ease of integration into circuit designs.

Essence

The essence of the LTC4225IUFD-2#PBF lies in its ability to efficiently manage power sources and protect downstream components. It combines multiple features into a single IC, simplifying system design and reducing component count.

Packaging/Quantity

The LTC4225IUFD-2#PBF is typically supplied in tape and reel packaging, suitable for automated assembly processes. The quantity per reel may vary depending on the supplier, but it is commonly available in quantities of 250 or 1000 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Output Current: 1A
• Fault Detection Thresholds: Programmable
• Quiescent Current: <10µA

Detailed Pin Configuration

The LTC4225IUFD-2#PBF features a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VIN1: Input voltage for power source 1
2. VIN2: Input voltage for power source 2
3. GND: Ground reference
4. FLT1: Fault output for power source 1
5. FLT2: Fault output for power source 2
6. EN1: Enable input for power source 1
7. EN2: Enable input for power source 2
8. VOUT: Output voltage
9. PG: Power good output
10. SENSE1: Current sense input for power source 1
11. SENSE2: Current sense input for power source 2
12. FAULT: Combined fault output
13. SS: Soft-start capacitor connection
14. REF: Reference voltage output
15. FB: Feedback input for output voltage regulation
16. GATE: Gate drive output

Functional Features

The LTC4225IUFD-2#PBF offers several key functional features:

1. Dual Power Source Management: It allows seamless switching between two power sources, ensuring uninterrupted power supply to the load.
2. Overvoltage and Undervoltage Protection: The IC monitors the input voltages and protects against excessive or insufficient voltage levels.
3. Current Limiting: It provides current limiting functionality to protect the load from excessive current draw.
4. Fault Detection and Reporting: The IC detects faults in the power sources and provides corresponding fault outputs for system monitoring.
5. Power Good Signal: The power good output indicates when the output voltage is within the desired range, enabling system-level monitoring.

Advantages and Disadvantages

Advantages

• Integration of multiple power management and protection functions into a single IC simplifies system design and reduces component count.
• Wide input voltage range allows compatibility with various power sources.
• High efficiency and low power consumption contribute to energy savings.
• Programmable fault detection thresholds provide flexibility for different application requirements.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• Operating temperature range of -40°C to 85°C may restrict usage in extreme environments.

Working Principles

The LTC4225IUFD-2#PBF operates by continuously monitoring the input voltages and current levels. It compares these values against programmable thresholds to detect faults or abnormal conditions. When a fault is detected, the IC takes appropriate actions such as disabling the faulty power source and activating the backup source. It also provides fault outputs for system-level monitoring and reporting.

Detailed Application Field Plans

The LTC4225IUFD-2#PBF finds applications in various fields where reliable power management and protection are crucial. Some specific application areas include:

1. Industrial Control Systems: Ensuring uninterrupted power supply and protecting sensitive components in industrial automation systems.
2. Telecommunications: Managing power sources and protecting critical equipment in telecom infrastructure.
3. Automotive Electronics: Safeguarding electronic systems in vehicles from voltage fluctuations and faults.
4. Data Centers: Power distribution