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LT3782AIFE
Product Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Output Voltage, Current Limit Protection
- Package: 28-Lead TSSOP
- Essence: Voltage Mode PWM Controller
- Packaging/Quantity: Tape & Reel (2500 units per reel)
Specifications
- Input Voltage Range: 4V to 60V
- Output Voltage Range: 0.8V to 60V
- Switching Frequency: Up to 1MHz
- Operating Temperature Range: -40°C to 125°C
- Shutdown Current: 10μA
- Maximum Duty Cycle: 90%
Detailed Pin Configuration
The LT3782AIFE has a total of 28 pins. Here is the detailed pin configuration:
- VCC: Power Supply Input
- GND: Ground
- FB: Feedback Pin for Output Voltage Regulation
- COMP: Compensation Pin for Loop Stability
- SS: Soft-Start Pin
- SYNC: Synchronization Input
- RT/CLKOUT: Oscillator Timing Resistor and Clock Output
- CT: Oscillator Timing Capacitor
- VIN: Input Voltage
- SW: Switch Node Connection
- PGND: Power Ground
- VREF: Reference Voltage Output
- ITH: Current Sense Threshold Setting
- SS/TRK: Soft-Start/Tracking Control
- VFB: Feedback Voltage Output
- VSENSE: Current Sense Input
- AGND: Analog Ground
- CLKIN: External Clock Input
- CLKOUT: Clock Output
- SYNC/PLL: Synchronization or PLL Input
- VCC: Power Supply Input
- GND: Ground
- FB: Feedback Pin for Output Voltage Regulation
- COMP: Compensation Pin for Loop Stability
- SS: Soft-Start Pin
- SYNC: Synchronization Input
- RT/CLKOUT: Oscillator Timing Resistor and Clock Output
- CT: Oscillator Timing Capacitor
Functional Features
- Voltage Mode PWM Control
- Adjustable Output Voltage
- Current Limit Protection
- Programmable Soft-Start
- Synchronization Capability
- Wide Input Voltage Range
- High Efficiency Operation
- Overvoltage Protection
- Undervoltage Lockout
Advantages and Disadvantages
Advantages
- High efficiency operation leads to reduced power loss
- Wide input voltage range allows for versatile applications
- Adjustable output voltage provides flexibility in design
- Current limit protection ensures safe operation
- Programmable soft-start feature prevents excessive inrush current
Disadvantages
- Limited maximum duty cycle may restrict certain applications
- Requires external components for complete functionality
- Relatively high number of pins may require careful PCB layout
Working Principles
The LT3782AIFE is a voltage mode PWM controller that regulates the output voltage by adjusting the duty cycle of the switching transistor. It operates by comparing the feedback voltage with a reference voltage and generating a control signal to adjust the duty cycle accordingly. This control signal is then used to drive an external power switch, which controls the energy transfer from the input to the output.
The device also incorporates various protection features such as current limit protection, overvoltage protection, and undervoltage lockout to ensure safe and reliable operation.
Detailed Application Field Plans
The LT3782AIFE is commonly used in various power management applications, including but not limited to:
- DC-DC Converters
- LED Drivers
- Battery Chargers
- Industrial Power Supplies
- Automotive Electronics
Detailed and Complete Alternative Models
- LT3782BIFE
- LT3782CIFE
- LT3782DIFE
- LT3782EIFE
These alternative models offer similar functionality with slight variations in specifications and pin configurations. It is recommended to refer to the respective datasheets for detailed information on each model.
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Énumérez 10 questions et réponses courantes liées à l'application de LT3782AIFE dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of LT3782AIFE in technical solutions:
Q: What is LT3782AIFE? A: LT3782AIFE is a specific model of integrated circuit (IC) designed for power management applications.
Q: What are the key features of LT3782AIFE? A: Some key features of LT3782AIFE include wide input voltage range, high efficiency, adjustable output voltage, and built-in protection features.
Q: What are the typical applications of LT3782AIFE? A: LT3782AIFE is commonly used in various technical solutions such as LED lighting systems, battery charging circuits, and DC-DC converters.
Q: How does LT3782AIFE help in LED lighting systems? A: LT3782AIFE can efficiently drive and control LEDs by providing constant current regulation, dimming capabilities, and protection against overvoltage or overcurrent conditions.
Q: Can LT3782AIFE be used for battery charging circuits? A: Yes, LT3782AIFE can be used to design battery charging circuits by regulating the charging current and voltage, ensuring safe and efficient charging.
Q: What is the maximum input voltage that LT3782AIFE can handle? A: The LT3782AIFE can handle input voltages up to a certain limit, typically around 60V.
Q: Is LT3782AIFE suitable for high-power applications? A: Yes, LT3782AIFE is suitable for high-power applications as it can handle high currents and provide efficient power conversion.
Q: Does LT3782AIFE have any built-in protection features? A: Yes, LT3782AIFE has built-in protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.
Q: Can LT3782AIFE be used in automotive applications? A: Yes, LT3782AIFE can be used in automotive applications where it can regulate power for various systems like lighting, sensors, or infotainment.
Q: Are there any evaluation boards or reference designs available for LT3782AIFE? A: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs that can help users quickly prototype and implement solutions using LT3782AIFE.
Please note that the answers provided here are general and may vary depending on specific requirements and application scenarios. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.