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LTC4225IGN-2#PBF
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LTC4225IGN-2#PBF

Product Overview

Category: Integrated Circuits (ICs)

Use: Power Management IC

Characteristics: - Dual Ideal Diode Controller and PowerPath Manager - Monitors two power sources and seamlessly switches between them - Prevents reverse current flow and protects the power sources - Provides uninterrupted power supply to the load

Package: 16-Lead SSOP (Shrink Small Outline Package)

Essence: The LTC4225IGN-2#PBF is an integrated circuit that serves as a dual ideal diode controller and power path manager. It ensures reliable and uninterrupted power supply by monitoring two power sources and automatically switching between them.

Packaging/Quantity: The LTC4225IGN-2#PBF is available in a 16-Lead SSOP package. It is typically sold in reels, with a quantity of 250 units per reel.

Specifications

  • Input Voltage Range: 2.9V to 18V
  • Operating Temperature Range: -40°C to 85°C
  • Quiescent Current: 35µA (typical)
  • Overvoltage Lockout Threshold: 4.6V (typical)
  • Reverse Current Protection Threshold: 10mA (typical)
  • Fault Output Voltage: 5V (typical)
  • Maximum Continuous Current: 3A

Pin Configuration

The LTC4225IGN-2#PBF has a 16-Lead SSOP package with the following pin configuration:

  1. VCC1: Positive supply voltage for channel 1
  2. GND1: Ground for channel 1
  3. FLT1: Fault output for channel 1
  4. IN1: Input for channel 1
  5. OUT1: Output for channel 1
  6. GATE1: Gate control for channel 1
  7. VCC2: Positive supply voltage for channel 2
  8. GND2: Ground for channel 2
  9. FLT2: Fault output for channel 2
  10. IN2: Input for channel 2
  11. OUT2: Output for channel 2
  12. GATE2: Gate control for channel 2
  13. GND: Common ground
  14. FLT: Combined fault output
  15. EN: Enable pin
  16. VCC: Positive supply voltage

Functional Features

  • Dual Ideal Diode Controller: The LTC4225IGN-2#PBF acts as a controller for two ideal diodes, allowing seamless switching between power sources.
  • PowerPath Manager: It manages the power path by monitoring the input voltages and automatically selecting the appropriate source.
  • Reverse Current Protection: The LTC4225IGN-2#PBF prevents reverse current flow, protecting the power sources from damage.
  • Fault Monitoring: It provides fault outputs for each channel and a combined fault output for easy system monitoring.

Advantages and Disadvantages

Advantages: - Reliable Power Switching: Ensures uninterrupted power supply to the load by seamlessly switching between power sources. - Reverse Current Protection: Protects the power sources from damage by preventing reverse current flow. - Fault Monitoring: Provides fault outputs for easy system monitoring and troubleshooting.

Disadvantages: - Limited Maximum Continuous Current: The LTC4225IGN-2#PBF has a maximum continuous current rating of 3A, which may not be sufficient for high-power applications.

Working Principles

The LTC4225IGN-2#PBF works by continuously monitoring the input voltages of both channels. It compares the voltages and selects the higher one as the power source for the load. If one of the inputs fails or drops below a certain threshold, the LTC4225IGN-2#PBF automatically switches to the other source to ensure uninterrupted power supply. It also prevents reverse current flow by controlling the gate voltages of the ideal diodes.

Detailed Application Field Plans

The LTC4225IGN-2#PBF is commonly used in various applications where reliable power switching and protection are required. Some of the typical application fields include:

  1. Battery-Powered Systems: The LTC4225IGN-2#PBF can be used in portable devices, such as smartphones and tablets, to manage power sources and prevent reverse current flow.
  2. Industrial Control Systems: It is suitable for industrial control systems that require redundant power sources and fault monitoring capabilities.
  3. Telecom Infrastructure: The LTC4225IGN-2#PBF can be utilized in telecom infrastructure equipment to ensure uninterrupted power supply during power source failures or maintenance.

Detailed and Complete Alternative Models

  1. LTC4412ES6#TRMPBF: This is a similar power management IC with a smaller SOT-23 package.
  2. LTC4357IMS#PBF: An alternative ideal diode controller and power path

Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem LTC4225IGN-2#PBF w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of LTC4225IGN-2#PBF in technical solutions:

  1. Q: What is LTC4225IGN-2#PBF? A: LTC4225IGN-2#PBF is a dual-supply hot swap controller designed for protecting circuitry on power supply cards from damaging input voltage transients.

  2. Q: What are the key features of LTC4225IGN-2#PBF? A: Some key features include dual supply monitoring, adjustable undervoltage and overvoltage thresholds, reverse current protection, and fault reporting.

  3. Q: How does LTC4225IGN-2#PBF provide dual supply monitoring? A: It monitors two supplies simultaneously and ensures that both supplies are within specified limits before enabling the output.

  4. Q: Can LTC4225IGN-2#PBF protect against reverse current flow? A: Yes, it provides reverse current protection by quickly turning off the external N-channel MOSFET if reverse current is detected.

  5. Q: How can I adjust the undervoltage and overvoltage thresholds with LTC4225IGN-2#PBF? A: The thresholds can be adjusted using external resistors connected to the VUV and VOV pins.

  6. Q: Does LTC4225IGN-2#PBF support fault reporting? A: Yes, it provides a fault output pin (FLT) that indicates various fault conditions such as overvoltage, undervoltage, or reverse current.

  7. Q: What is the maximum operating voltage range for LTC4225IGN-2#PBF? A: The maximum operating voltage range is typically between -0.3V and 36V.

  8. Q: Can LTC4225IGN-2#PBF be used in high-power applications? A: Yes, it can handle high-power applications with its ability to control external N-channel MOSFETs.

  9. Q: Is LTC4225IGN-2#PBF suitable for hot-swapping applications? A: Yes, it is specifically designed for hot-swapping applications where circuitry needs to be protected during power supply insertion or removal.

  10. Q: What package does LTC4225IGN-2#PBF come in? A: LTC4225IGN-2#PBF is available in a 16-lead SSOP package.

Please note that the answers provided here are general and may vary depending on the specific application and requirements. It is always recommended to refer to the datasheet and consult with technical experts for accurate information.