Linear Technology/Analog Devices
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LTC3859EFE

LTC3859EFE

Product Overview

Category

LTC3859EFE belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications.

Characteristics

  • High efficiency
  • Wide input voltage range
  • Adjustable output voltage
  • Current mode control
  • Synchronous rectification
  • Overcurrent protection
  • Thermal shutdown

Package

LTC3859EFE is available in a 28-lead TSSOP package.

Essence

The essence of LTC3859EFE lies in its ability to efficiently regulate power in various applications.

Packaging/Quantity

This product is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

  • Input Voltage Range: 4.5V to 38V
  • Output Voltage Range: 0.6V to 5.5V
  • Maximum Output Current: 8A
  • Switching Frequency: Up to 2MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. PGND: Power ground pin
  3. BOOT: Bootstrap capacitor connection pin
  4. SW: Switching node pin
  5. SS/TR: Soft-start/tracking pin
  6. FB: Feedback voltage pin
  7. VCC: Supply voltage pin
  8. GATE: Gate driver output pin
  9. SYNC/MODE: External synchronization/mode selection pin
  10. RT/CLKOUT: Resistor timing/clock output pin
  11. CLKIN: Clock input pin
  12. PGOOD: Power good indicator pin
  13. ITH: Current sense threshold pin
  14. COMP: Compensation pin
  15. SS/TR: Soft-start/tracking pin
  16. VSENSE+: Positive current sense input pin
  17. VSENSE-: Negative current sense input pin
  18. AGND: Analog ground pin
  19. VOUT: Output voltage pin
  20. VOUT: Output voltage pin
  21. VOUT: Output voltage pin
  22. VOUT: Output voltage pin
  23. VOUT: Output voltage pin
  24. VOUT: Output voltage pin
  25. VOUT: Output voltage pin
  26. VOUT: Output voltage pin
  27. VOUT: Output voltage pin
  28. VOUT: Output voltage pin

Functional Features

  1. High Efficiency: LTC3859EFE offers high efficiency power conversion, minimizing energy losses.
  2. Wide Input Voltage Range: This product can handle a wide range of input voltages, making it versatile for various applications.
  3. Adjustable Output Voltage: The output voltage can be easily adjusted to meet specific requirements.
  4. Current Mode Control: The current mode control ensures stable and reliable operation.
  5. Synchronous Rectification: Synchronous rectification improves overall efficiency by reducing power losses.
  6. Overcurrent Protection: LTC3859EFE incorporates overcurrent protection to safeguard the circuit from excessive currents.
  7. Thermal Shutdown: The thermal shutdown feature protects the device from overheating.

Advantages and Disadvantages

Advantages

  • High efficiency power conversion
  • Wide input voltage range
  • Adjustable output voltage
  • Current mode control for stability
  • Synchronous rectification for improved efficiency
  • Overcurrent protection for circuit safety
  • Thermal shutdown for device protection

Disadvantages

  • Limited maximum output current (8A)

Working Principles

LTC3859EFE operates on the principle of current mode control. It regulates the power flow by adjusting the duty cycle of the internal switches based on the feedback received from the output voltage. By continuously monitoring the current flowing through the inductor, it ensures stable and efficient power conversion.

Detailed Application Field Plans

LTC3859EFE finds applications in various fields, including: - Industrial power supplies - Automotive systems - Telecommunications equipment - Data centers - Consumer electronics

Detailed and Complete Alternative Models

  1. LTC3859HFE
  2. LTC3859GFE
  3. LTC3859IFE
  4. LTC3859AFE
  5. LTC3859BFE

These alternative models offer similar functionality and characteristics to LTC3859EFE, providing flexibility for different design requirements.

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Énumérez 10 questions et réponses courantes liées à l'application de LTC3859EFE dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of LTC3859EFE in technical solutions:

  1. Q: What is LTC3859EFE? A: LTC3859EFE is a high-performance synchronous step-down DC/DC controller designed for various power supply applications.

  2. Q: What is the input voltage range supported by LTC3859EFE? A: LTC3859EFE supports an input voltage range from 4.5V to 38V.

  3. Q: What is the output voltage range supported by LTC3859EFE? A: LTC3859EFE supports an output voltage range from 0.6V to VIN.

  4. Q: What is the maximum output current that can be delivered by LTC3859EFE? A: LTC3859EFE can deliver a maximum output current of up to 25A.

  5. Q: Does LTC3859EFE support synchronous rectification? A: Yes, LTC3859EFE supports synchronous rectification for improved efficiency.

  6. Q: Can LTC3859EFE operate in a wide temperature range? A: Yes, LTC3859EFE is designed to operate in a temperature range from -40°C to 125°C.

  7. Q: Does LTC3859EFE have any built-in protection features? A: Yes, LTC3859EFE includes various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

  8. Q: Can LTC3859EFE be used in automotive applications? A: Yes, LTC3859EFE is suitable for automotive applications as it meets the necessary requirements and standards.

  9. Q: What type of control loop does LTC3859EFE use? A: LTC3859EFE uses a voltage mode control loop for stable and accurate regulation.

  10. Q: Are there any evaluation boards or reference designs available for LTC3859EFE? A: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs to help with the implementation of LTC3859EFE in various applications.

Please note that these answers are general and may vary depending on specific application requirements. It is always recommended to refer to the LTC3859EFE datasheet and consult with technical experts for detailed information.