LT3748EMS#PBF

Product Overview

The LT3748EMS#PBF belongs to the category of high voltage, high efficiency synchronous step-down DC/DC controllers. It is commonly used in power management applications and is characterized by its high efficiency, compact package, and versatile functionality. The essence of this product lies in its ability to efficiently regulate high voltage inputs to lower output voltages, making it suitable for a wide range of power supply designs. The LT3748EMS#PBF is typically available in a small MSOP-16 package and is sold individually.

Specifications

• Input Voltage Range: 6V to 100V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 500kHz
• Operating Temperature Range: -40°C to 125°C
• Package Type: MSOP-16

Detailed Pin Configuration

The LT3748EMS#PBF features a 16-pin MSOP package with the following pin configuration: 1. VIN: Input Voltage 2. GND: Ground 3. FB: Feedback 4. SS/TRK: Soft-Start/Tracking 5. SYNC/MODE: Synchronization/Mode Selection 6. RT/CLKOUT: Timing Resistor/Clock Output 7. VCC: Controller Supply Voltage 8. PGATE: Power MOSFET Gate Drive 9. SW: Switch Node 10. BST: Bootstrap 11. COMP: Error Amplifier Output 12. SS/TRK: Soft-Start/Tracking 13. SYNC/MODE: Synchronization/Mode Selection 14. RT/CLKOUT: Timing Resistor/Clock Output 15. VCC: Controller Supply Voltage 16. PGND: Power Ground

Functional Features

The LT3748EMS#PBF offers several functional features, including: - High Efficiency Synchronous Rectification - Wide Input Voltage Range - Adjustable Output Voltage - Programmable Soft-Start - Synchronization Capability - Precision Voltage Reference - Overcurrent Protection - Thermal Shutdown

Advantages and Disadvantages

Advantages

• High Efficiency
• Wide Input Voltage Range
• Compact Package
• Versatile Functionality
• Overcurrent Protection

Disadvantages

• Limited Maximum Switching Frequency
• Requires External Components for Operation

Working Principles

The LT3748EMS#PBF operates on the principle of synchronous rectification, where the input voltage is efficiently regulated to produce a lower output voltage. This is achieved through the control of the power MOSFETs and the feedback loop, ensuring precise voltage regulation and high efficiency conversion.

Detailed Application Field Plans

The LT3748EMS#PBF finds extensive application in various fields, including: - Industrial Power Supplies - Automotive Electronics - LED Lighting - Battery Charging Systems - Telecom Infrastructure - Renewable Energy Systems

Detailed and Complete Alternative Models

Some alternative models to the LT3748EMS#PBF include: - LT3757 - LT8610 - LT8640 - LT8362 - LT8609

In conclusion, the LT3748EMS#PBF is a versatile and efficient synchronous step-down DC/DC controller that caters to a wide range of power management applications. Its high efficiency, compact package, and functional features make it a popular choice for designers seeking reliable power supply solutions.

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