Linear Technology/Analog Devices
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LTC3862EUH

LTC3862EUH

Product Overview

Category

LTC3862EUH belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various electronic devices and systems to efficiently regulate and control power supply voltages.

Characteristics

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

Package

LTC3862EUH is available in a compact and industry-standard 28-pin QFN package, which ensures easy integration into circuit boards.

Essence

The essence of LTC3862EUH lies in its ability to provide reliable and efficient power management solutions for a wide range of applications.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Input Voltage Range: 4.5V to 60V
  • Output Voltage Range: 0.8V to 24V
  • Maximum Output Current: 3A
  • Switching Frequency: Up to 1MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3862EUH features a total of 28 pins, each serving a specific function. The pin configuration is as follows:

  1. VIN: Input voltage pin
  2. GND: Ground reference pin
  3. VCC: Power supply pin
  4. SW: Switching node pin
  5. FB: Feedback pin
  6. COMP: Compensation pin
  7. SS: Soft-start pin
  8. SYNC: Synchronization pin
  9. PGND: Power ground pin
  10. AGND: Analog ground pin
  11. BST: Boost pin
  12. EN: Enable pin
  13. RT: Timing resistor pin
  14. SS/TRK: Soft-start/Tracking pin
  15. VOUT: Output voltage pin 16-28. NC: No connection pins

Functional Features

  1. High Efficiency: The LTC3862EUH incorporates advanced power conversion techniques, resulting in high efficiency and reduced power losses.

  2. Wide Input Voltage Range: With an input voltage range of 4.5V to 60V, this IC can handle a wide variety of power sources.

  3. Adjustable Output Voltage: The output voltage can be easily adjusted within the range of 0.8V to 24V, providing flexibility for different applications.

  4. Current Mode Control: The IC utilizes current mode control, which enhances stability and response to load variations.

  5. Overcurrent Protection: LTC3862EUH features built-in overcurrent protection, safeguarding the circuit from excessive currents.

  6. Thermal Shutdown Protection: To prevent overheating, the IC includes thermal shutdown protection, ensuring safe operation under extreme conditions.

Advantages and Disadvantages

Advantages

  • High efficiency power conversion leads to energy savings.
  • Wide input voltage range allows compatibility with various power sources.
  • Adjustable output voltage provides flexibility for different applications.
  • Current mode control enhances stability and load response.
  • Built-in overcurrent protection ensures circuit safety.
  • Thermal shutdown protection prevents overheating.

Disadvantages

  • Limited maximum output current (3A) may not be suitable for high-power applications.
  • Higher cost compared to some alternative models.

Working Principles

The LTC3862EUH operates based on a switching regulator topology. It utilizes a combination of pulse width modulation (PWM) and current mode control techniques to regulate the output voltage. By continuously monitoring the feedback signal, the IC adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

Detailed Application Field Plans

The LTC3862EUH finds applications in various fields, including:

  1. Industrial Automation: Power supply regulation for industrial control systems and machinery.
  2. Telecommunications: Voltage regulation for telecom infrastructure equipment.
  3. Automotive: Power management for automotive electronics and electric vehicles.
  4. Renewable Energy: Efficient power conversion for solar and wind energy systems.
  5. Consumer Electronics: Voltage regulation for portable devices, such as smartphones and tablets.

Detailed and Complete Alternative Models

  1. LTC3862EUF: Similar to LTC3862EUH but available in a different package (QFN-32).
  2. LTC3862IUH: Higher maximum output current (5A) version of LTC3862EUH.
  3. LTC3862EUFD: Compact version with reduced pin count (20-pin QFN).

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the LTC3862EUH is a versatile integrated circuit designed for efficient power management. Its wide input voltage range, adjustable output voltage, and various built-in

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LTC3862EUH v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LTC3862EUH in technical solutions:

  1. Q: What is LTC3862EUH? A: LTC3862EUH is a high-performance synchronous step-down DC/DC controller IC manufactured by Linear Technology (now part of Analog Devices). It is commonly used in power management applications.

  2. Q: What is the input voltage range supported by LTC3862EUH? A: The input voltage range supported by LTC3862EUH is typically between 4.5V and 38V.

  3. Q: What is the output voltage range that can be achieved using LTC3862EUH? A: The output voltage range achievable with LTC3862EUH depends on the external components used, but it can generally support output voltages as low as 0.8V and as high as the input voltage.

  4. Q: What is the maximum output current that LTC3862EUH can handle? A: LTC3862EUH can handle a maximum output current of up to 20A, depending on the design and thermal considerations.

  5. Q: Does LTC3862EUH require an external MOSFET for operation? A: Yes, LTC3862EUH requires an external N-channel MOSFET to function as a synchronous buck converter.

  6. Q: Can LTC3862EUH operate in a constant frequency or a variable frequency mode? A: LTC3862EUH can operate in both constant frequency and variable frequency modes, providing flexibility in different applications.

  7. Q: What is the typical efficiency of LTC3862EUH? A: The efficiency of LTC3862EUH depends on various factors such as input/output voltage, load conditions, and component selection. However, it can achieve high efficiencies above 90% in many applications.

  8. Q: Does LTC3862EUH have any built-in protection features? A: Yes, LTC3862EUH incorporates various protection features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  9. Q: Can LTC3862EUH be used in automotive applications? A: Yes, LTC3862EUH is suitable for automotive applications as it meets the necessary requirements such as wide input voltage range, robustness, and reliability.

  10. Q: Are there any evaluation boards or reference designs available for LTC3862EUH? A: Yes, Analog Devices provides evaluation boards and reference designs for LTC3862EUH, which can help users quickly prototype and implement their power management solutions.

Please note that the answers provided here are general and may vary depending on specific design considerations and application requirements. It is always recommended to refer to the datasheet and application notes for detailed information.