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LT3755EUD#TRPBF
Introduction
The LT3755EUD#TRPBF is a high voltage, high side current sense DC/DC controller designed for driving an external P-channel power MOSFET. This device operates over an input voltage range of 4.5V to 40V and can produce an output voltage up to 60V. It is commonly used in various applications such as automotive, industrial, and telecommunications.
Basic Information Overview
- Category: High Voltage, High Side Current Sense DC/DC Controller
- Use: Driving an external P-channel power MOSFET
- Characteristics: Wide input voltage range, high output voltage capability
- Package: 16-Lead QFN
- Essence: Efficient power management and control
- Packaging/Quantity: Tape & Reel, 2500 units per reel
Specifications
- Input Voltage Range: 4.5V to 40V
- Output Voltage: Up to 60V
- Package Type: 16-Lead QFN
- Operating Temperature Range: -40°C to 125°C
- Switching Frequency: Up to 2MHz
- Current Limit Threshold: Adjustable
Detailed Pin Configuration
- VIN: Input Voltage
- SS: Soft-Start
- RT/CLKOUT: Oscillator Frequency Set/ Clock Output
- GATE: Gate Drive Output
- PGND: Power Ground
- VCC: Supply Voltage
- FB: Feedback Input
- COMP: Error Amplifier Output
- CS+: Positive Current Sense Input
- CS-: Negative Current Sense Input
- RT/CLKIN: Oscillator Frequency Set/ Clock Input
- SYNC/MODE: Synchronization Input/ Mode Select
- AGND: Analog Ground
- VREF: Reference Voltage Output
- VOUT: Output Voltage
- BST: Bootstrap Voltage
Functional Features
- High Voltage Operation
- Integrated Soft-Start
- Adjustable Switching Frequency
- Synchronization Capability
- Precision Current Sense
Advantages and Disadvantages
Advantages
- Wide Input Voltage Range
- High Output Voltage Capability
- Flexible Frequency Synchronization
- Accurate Current Sensing
Disadvantages
- External Components Required for Full Functionality
- Limited Maximum Switching Frequency
Working Principles
The LT3755EUD#TRPBF operates by regulating the drive to an external P-channel power MOSFET, allowing precise control of the output voltage. The device incorporates a precision current sense amplifier to enable accurate current limiting and monitoring. Additionally, the integrated soft-start feature ensures controlled start-up of the power supply, minimizing inrush current.
Detailed Application Field Plans
The LT3755EUD#TRPBF finds extensive application in: - Automotive LED Lighting Systems - Industrial Power Supplies - Telecommunications Infrastructure
Detailed and Complete Alternative Models
- LT3755
- LT3755-1
- LT3755-2
- LT3755-3
- LT3755-4
In summary, the LT3755EUD#TRPBF is a versatile high voltage, high side current sense DC/DC controller with a wide range of applications across various industries. Its advanced features and precise control make it a preferred choice for demanding power management requirements.
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What is the input voltage range of LT3755EUD#TRPBF?
- The input voltage range of LT3755EUD#TRPBF is 4.5V to 36V.
What is the maximum output current of LT3755EUD#TRPBF?
- The maximum output current of LT3755EUD#TRPBF is 3A.
Can LT3755EUD#TRPBF be used for LED lighting applications?
- Yes, LT3755EUD#TRPBF is commonly used for LED lighting applications due to its high efficiency and dimming capabilities.
Does LT3755EUD#TRPBF have built-in protection features?
- Yes, LT3755EUD#TRPBF includes various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.
What is the switching frequency range of LT3755EUD#TRPBF?
- The switching frequency range of LT3755EUD#TRPBF is typically 100kHz to 1MHz.
Is LT3755EUD#TRPBF suitable for automotive applications?
- Yes, LT3755EUD#TRPBF is suitable for automotive applications due to its wide input voltage range and robust design.
Can LT3755EUD#TRPBF be used in boost or buck-boost configurations?
- Yes, LT3755EUD#TRPBF can be used in both boost and buck-boost configurations, making it versatile for different power supply designs.
What is the typical efficiency of LT3755EUD#TRPBF?
- The typical efficiency of LT3755EUD#TRPBF is around 90% under typical operating conditions.
Does LT3755EUD#TRPBF support dimming control for LED applications?
- Yes, LT3755EUD#TRPBF supports analog dimming control, making it suitable for LED lighting applications that require dimming functionality.
Are there any application notes or reference designs available for LT3755EUD#TRPBF?
- Yes, Linear Technology (now part of Analog Devices) provides application notes and reference designs for LT3755EUD#TRPBF to assist with its implementation in technical solutions.