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LTC3728LEUH#PBF
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LTC3728LEUH#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current mode control - Synchronous rectification - Overvoltage protection - Undervoltage lockout - Thermal shutdown

Package: 28-Lead QFN (Quad Flat No-Lead)

Essence: The LTC3728LEUH#PBF is a high-performance power management IC designed for various applications requiring efficient power conversion.

Packaging/Quantity: The LTC3728LEUH#PBF is available in a 28-Lead QFN package. It is typically sold in reels of 250 units.

Specifications

  • Input Voltage Range: 4V to 36V
  • Output Voltage Range: 0.6V to 34V
  • Maximum Output Current: 20A
  • Switching Frequency: Up to 2MHz
  • Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC3728LEUH#PBF has the following pin configuration:

  1. VIN: Input Voltage
  2. GND: Ground
  3. FB: Feedback Voltage
  4. SS: Soft-Start
  5. SYNC: Synchronization
  6. VCC: Supply Voltage
  7. PGND: Power Ground
  8. SW: Switch Node
  9. BST: Bootstrap
  10. COMP: Compensation
  11. RT: Oscillator Timing Resistor
  12. CT: Oscillator Timing Capacitor
  13. SS/TRK: Soft-Start/Tracking
  14. OVLO: Overvoltage Lockout
  15. UVLO: Undervoltage Lockout
  16. PGOOD: Power Good
  17. ITH: Current Sense Threshold
  18. VREF: Reference Voltage
  19. AGND: Analog Ground
  20. SS/TRK: Soft-Start/Tracking (Duplicate)
  21. RT: Oscillator Timing Resistor (Duplicate)
  22. CT: Oscillator Timing Capacitor (Duplicate)
  23. COMP: Compensation (Duplicate)
  24. SYNC: Synchronization (Duplicate)
  25. FB: Feedback Voltage (Duplicate)
  26. GND: Ground (Duplicate)
  27. VIN: Input Voltage (Duplicate)
  28. SW: Switch Node (Duplicate)

Functional Features

  1. High Efficiency: The LTC3728LEUH#PBF utilizes advanced power management techniques to achieve high efficiency, minimizing power losses and maximizing battery life.
  2. Wide Input Voltage Range: With an input voltage range of 4V to 36V, the LTC3728LEUH#PBF can be used in a wide range of applications.
  3. Adjustable Output Voltage: The output voltage can be easily adjusted using external resistors, allowing for flexibility in different system requirements.
  4. Current Mode Control: The IC employs current mode control for stable and reliable operation, ensuring proper regulation of the output voltage.
  5. Synchronous Rectification: Synchronous rectification improves efficiency by reducing power dissipation in the output diode.
  6. Overvoltage Protection: The LTC3728LEUH#PBF incorporates overvoltage protection to safeguard the connected devices from excessive voltage levels.
  7. Undervoltage Lockout: The undervoltage lockout feature prevents the IC from operating when the input voltage falls below a certain threshold, protecting the system from potential damage.
  8. Thermal Shutdown: In case of excessive temperature, the thermal shutdown feature activates to prevent overheating and ensure safe operation.

Advantages and Disadvantages

Advantages: - High efficiency design - Wide input voltage range - Adjustable output voltage - Comprehensive protection features - Compact package size

Disadvantages: - Limited maximum output current (20A)

Working Principles

The LTC3728LEUH#PBF operates as a step-down DC-DC converter. It takes an input voltage and efficiently converts it to a lower, regulated output voltage. The IC utilizes a current mode control architecture to maintain stable output voltage regulation. Synchronous rectification is employed to minimize power losses in the output diode. The IC also incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown to ensure safe and reliable operation.

Detailed Application Field Plans

The LTC3728LEUH#PBF can be used in a wide range of applications, including but not limited to: - Industrial power supplies - Automotive electronics - Telecommunications equipment - Distributed power systems - Battery-powered devices - LED lighting systems

Detailed and Complete Alternative Models

  1. LTC3728LEUH#TRPBF: Similar to LTC3728LEUH#PBF, but available in tape and reel packaging.

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LTC3728LEUH#PBF dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of LTC3728LEUH#PBF in technical solutions:

  1. Q: What is LTC3728LEUH#PBF? A: LTC3728LEUH#PBF 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 LTC3728LEUH#PBF? A: LTC3728LEUH#PBF supports an input voltage range from 4V to 38V, making it suitable for a wide range of applications.

  3. Q: What is the output voltage range that can be achieved using LTC3728LEUH#PBF? A: The output voltage range of LTC3728LEUH#PBF depends on the external components used in the circuit design. It can support output voltages as low as 0.6V.

  4. Q: What is the maximum output current that LTC3728LEUH#PBF can handle? A: LTC3728LEUH#PBF can handle a maximum output current of up to 20A, depending on the thermal and electrical constraints of the system.

  5. Q: Does LTC3728LEUH#PBF have built-in protection features? A: Yes, LTC3728LEUH#PBF includes various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  6. Q: Can LTC3728LEUH#PBF operate in a synchronous rectification mode? A: Yes, LTC3728LEUH#PBF supports synchronous rectification, which improves efficiency by reducing power losses.

  7. Q: What is the switching frequency range of LTC3728LEUH#PBF? A: The switching frequency of LTC3728LEUH#PBF can be programmed from 100kHz to 1MHz, allowing flexibility in design based on specific requirements.

  8. Q: Is LTC3728LEUH#PBF suitable for automotive applications? A: Yes, LTC3728LEUH#PBF is designed to meet the stringent requirements of automotive applications and is qualified for operation in automotive environments.

  9. Q: Can LTC3728LEUH#PBF be used in battery-powered systems? A: Yes, LTC3728LEUH#PBF can be used in battery-powered systems as it supports a wide input voltage range and offers efficient power conversion.

  10. Q: Are there any evaluation boards or reference designs available for LTC3728LEUH#PBF? A: Yes, Analog Devices provides evaluation boards and reference designs for LTC3728LEUH#PBF, which can help users quickly prototype and implement their power management solutions.

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