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LTC3865IUH#TRPBF
Product Overview
Category: Integrated Circuit (IC)
Use: Power Management IC
Characteristics: - High Efficiency Synchronous Step-Down DC/DC Controller - Wide Input Voltage Range: 4.5V to 38V - Output Voltage Range: 0.6V to VIN - Adjustable Frequency Range: 200kHz to 2.2MHz - Constant Frequency or Burst Mode® Operation - Programmable Soft-Start - Overvoltage and Overcurrent Protection - Fault Flag Indicator - Thermally Enhanced 36-Lead 5mm × 6mm QFN Package
Package: 36-Lead 5mm × 6mm QFN
Essence: The LTC3865IUH#TRPBF is a high-efficiency synchronous step-down DC/DC controller designed for power management applications. It offers a wide input voltage range, adjustable frequency, and various protection features.
Packaging/Quantity: The LTC3865IUH#TRPBF is available in a thermally enhanced 36-Lead 5mm × 6mm QFN package.
Specifications
- Input Voltage Range: 4.5V to 38V
- Output Voltage Range: 0.6V to VIN
- Adjustable Frequency Range: 200kHz to 2.2MHz
- Operating Temperature Range: -40°C to 125°C
- Maximum Duty Cycle: 90%
- Quiescent Current: 50µA
- Switching Frequency: Programmable up to 2.2MHz
- Package Type: 36-Lead 5mm × 6mm QFN
Detailed Pin Configuration
The LTC3865IUH#TRPBF has the following pin configuration:
- VCC: Supply voltage input
- GND: Ground reference
- FB: Feedback voltage input
- SS: Soft-start control pin
- SYNC/CLKOUT: Synchronization or clock output
- CLKIN: Clock input
- VCCSENSE: Supply voltage sense input
- ITH: Current limit threshold setting
- PGND: Power ground reference
- BOOT: High-side gate driver bootstrap supply
- SW: Switch node connection
- LX: Inductor connection
- COMP: Compensation pin for loop stability
- RT: Oscillator frequency setting resistor
- AGND: Analog ground reference
- SS/TRK: Soft-start tracking pin
- PGOOD: Power good indicator output
- OV/UV: Overvoltage/undervoltage protection input
- OCSET: Overcurrent protection threshold setting
- FREQ: Frequency selection pin
Functional Features
- High efficiency synchronous step-down DC/DC controller
- Wide input voltage range allows for versatile applications
- Adjustable frequency enables optimization for different operating conditions
- Constant frequency or Burst Mode® operation for improved efficiency
- Programmable soft-start for controlled startup
- Overvoltage and overcurrent protection for enhanced reliability
- Fault flag indicator for easy fault detection
- Thermally enhanced package ensures efficient heat dissipation
Advantages and Disadvantages
Advantages: - High efficiency operation - Wide input voltage range - Adjustable frequency for optimization - Comprehensive protection features - Compact and thermally enhanced package
Disadvantages: - Limited maximum duty cycle (90%) - Requires external components for complete power management solution
Working Principles
The LTC3865IUH#TRPBF operates as a synchronous step-down DC/DC controller. It regulates the output voltage by controlling the duty cycle of the internal power switches. The input voltage is stepped down to the desired output voltage with high efficiency, thanks to synchronous rectification.
The controller operates in either constant frequency or Burst Mode® operation, depending on the load conditions. This allows for improved efficiency across a wide range of operating conditions. The frequency can be adjusted within a programmable range to optimize performance.
The LTC3865IUH#TRPBF also incorporates various protection features such as overvoltage and overcurrent protection. These safeguards ensure the safe operation of the power management system and protect against potential faults.
Detailed Application Field Plans
The LTC3865IUH#TRPBF finds applications in various fields, including but not limited to: - Industrial equipment - Automotive systems - Telecommunications infrastructure - Power supplies - Battery-powered devices - Distributed power systems
Its wide input voltage range, adjustable frequency, and comprehensive protection features make it suitable for diverse power management requirements in these fields.
Detailed and Complete Alternative Models
- LTC3863: Similar high-efficiency synchronous step-down DC/DC controller with adjustable frequency and comprehensive protection features.
- LTC3866: S
Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng LTC3865IUH#TRPBF trong giải pháp kỹ thuật
Sure! Here are 10 common questions and answers related to the application of LTC3865IUH#TRPBF in technical solutions:
Q: What is LTC3865IUH#TRPBF? A: LTC3865IUH#TRPBF 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.
Q: What is the input voltage range supported by LTC3865IUH#TRPBF? A: LTC3865IUH#TRPBF supports an input voltage range from 4.5V to 38V, making it suitable for a wide range of applications.
Q: What is the output voltage range that can be achieved with LTC3865IUH#TRPBF? A: The output voltage range of LTC3865IUH#TRPBF depends on the external components used in the circuit design. It can support output voltages as low as 0.6V.
Q: What is the maximum output current that LTC3865IUH#TRPBF can handle? A: LTC3865IUH#TRPBF can handle a maximum output current of up to 25A, making it suitable for high-power applications.
Q: Does LTC3865IUH#TRPBF have built-in protection features? A: Yes, LTC3865IUH#TRPBF includes various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
Q: Can LTC3865IUH#TRPBF operate in a synchronous rectification mode? A: Yes, LTC3865IUH#TRPBF supports synchronous rectification, which improves efficiency and reduces power losses.
Q: What is the switching frequency range of LTC3865IUH#TRPBF? A: The switching frequency of LTC3865IUH#TRPBF can be programmed from 200kHz to 2.2MHz, allowing flexibility in design.
Q: Is LTC3865IUH#TRPBF suitable for automotive applications? A: Yes, LTC3865IUH#TRPBF is designed to meet automotive-grade requirements and can be used in automotive applications.
Q: Can LTC3865IUH#TRPBF operate in a wide temperature range? A: Yes, LTC3865IUH#TRPBF has an extended operating temperature range of -40°C to 125°C, making it suitable for harsh environments.
Q: Are there any evaluation boards or reference designs available for LTC3865IUH#TRPBF? A: Yes, Analog Devices provides evaluation boards and reference designs for LTC3865IUH#TRPBF, which can help users quickly prototype their applications.
Please note that these answers are general and may vary depending on specific application requirements and circuit design considerations.