LT3756IUD-2#TRPBF

Product Overview

Category

The LT3756IUD-2#TRPBF belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• The LT3756IUD-2#TRPBF is a high voltage, current mode DC/DC controller.
• It operates over a wide input voltage range and can regulate output voltages up to 100V.
• This IC is designed to drive an external N-channel MOSFET for high efficiency power conversion.
• It offers various protection features such as input and output undervoltage lockout, overvoltage protection, and thermal shutdown.

Package

The LT3756IUD-2#TRPBF is available in a 16-lead QFN package.

Essence

The essence of this IC lies in its ability to efficiently control and regulate power in a wide range of applications.

Packaging/Quantity

The LT3756IUD-2#TRPBF is typically sold in reels containing a quantity of 250 units.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: Up to 100V
• Switching Frequency: Adjustable up to 1MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 200µA

Detailed Pin Configuration

The LT3756IUD-2#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for loop stability
5. SS: Soft-start pin for controlling the startup time
6. RT/CLK: External resistor or clock input for setting the switching frequency
7. SYNC/SS/TRK: Synchronization, soft-start, or tracking pin
8. VCC: Supply voltage pin
9. PGND: Power ground pin
10. SW: Switch node connection to external MOSFET
11. BST: Boost capacitor connection 12-16. NC: No connect pins

Functional Features

The LT3756IUD-2#TRPBF offers the following functional features:

1. Wide input voltage range allows for versatile applications.
2. High efficiency power conversion due to the use of an external N-channel MOSFET.
3. Various protection features ensure safe operation.
4. Adjustable switching frequency enables optimization for different applications.
5. Soft-start feature controls the startup time and reduces inrush current.

Advantages and Disadvantages

Advantages

• Wide input voltage range provides flexibility in application design.
• High efficiency power conversion leads to energy savings.
• Multiple protection features enhance system reliability.
• Adjustable switching frequency allows for optimization based on specific requirements.
• Soft-start feature reduces stress on components during startup.

Disadvantages

• Limited availability of alternative models may restrict design options.
• The 16-lead QFN package may require careful PCB layout considerations.

Working Principles

The LT3756IUD-2#TRPBF operates as a current mode DC/DC controller. It regulates the output voltage by controlling the duty cycle of an external N-channel MOSFET. By monitoring the feedback voltage, the IC adjusts the duty cycle to maintain the desired output voltage. The switching frequency can be set externally using a resistor or clock input. The IC also incorporates various protection features to safeguard against overvoltage, undervoltage, and thermal issues.

Detailed Application Field Plans

The LT3756IUD-2#TRPBF finds applications in various fields, including:

1. Industrial power supplies
2. Automotive electronics
3. LED lighting systems
4. Telecom infrastructure
5. Renewable energy systems

Detailed and Complete Alternative Models

While the LT3756IUD-2#TRPBF is a versatile IC, there are alternative models available in the market that offer similar functionality. Some of these alternatives include:

1. LT3756IUD-1#TRPBF
2. LT3756IUD-3#TRPBF
3. LT3756IUD-4#TRPBF
4. LT3756IUD-5#TRPBF

These alternative models can be considered based on specific design requirements and availability.

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