LT3796IFE-1#TRPBF

Product Overview

Category

The LT3796IFE-1#TRPBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for controlling and regulating LED lighting systems.

Characteristics

• High efficiency: The LT3796IFE-1#TRPBF offers high efficiency power conversion, making it suitable for energy-efficient LED lighting solutions.
• Wide input voltage range: It can operate with input voltages ranging from 4.5V to 100V, allowing flexibility in various lighting applications.
• Versatile dimming control: The IC supports both analog and PWM dimming techniques, enabling precise control over the brightness of LED lights.
• Protection features: It incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe operation and longevity of the LED lighting system.

Package and Quantity

The LT3796IFE-1#TRPBF is available in a small-sized 28-lead TSSOP package. It is typically sold in reels containing 250 units.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: Up to 100V
• Maximum Output Current: 2A
• Switching Frequency: Adjustable up to 1MHz
• Dimming Control: Analog and PWM
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Pin Configuration

The LT3796IFE-1#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. VCC: Supply voltage for internal circuitry
3. GND: Ground reference
4. FB: Feedback pin for output voltage regulation
5. DIM: Dimming control pin
6. SYNC: Synchronization input for multiple ICs
7. RT/CLK: External resistor or clock input for setting switching frequency
8. SS/TRK: Soft-start and tracking control pin
9. VOUT: Output voltage pin
10. SW: Switching node connection
11. PGND: Power ground reference 12-28. NC: No connection pins

Functional Features

1. High-efficiency LED driver: The LT3796IFE-1#TRPBF provides efficient power conversion, minimizing energy losses and maximizing the performance of LED lighting systems.
2. Wide input voltage range: It can handle a wide range of input voltages, making it suitable for various lighting applications.
3. Dimming control options: The IC supports both analog and PWM dimming techniques, allowing precise control over the brightness of LED lights.
4. Protection mechanisms: It incorporates protection features such as overvoltage, overcurrent, and thermal shutdown, ensuring safe operation and protecting the LED lighting system from damage.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Wide input voltage range allows flexibility in different applications.
• Versatile dimming control options enable customized lighting solutions.
• Integrated protection mechanisms ensure the safety and longevity of the LED lighting system.

Disadvantages

• Limited maximum output current may restrict usage in high-power LED applications.
• Requires external components for proper operation.

Working Principles

The LT3796IFE-1#TRPBF operates as a step-down (buck) converter, converting the higher input voltage to a lower output voltage suitable for driving LEDs. It utilizes a high-frequency switching technique to efficiently regulate the output voltage. The dimming control feature adjusts the duty cycle of the switching signal, thereby controlling the brightness of the LEDs. The IC also incorporates protection mechanisms to safeguard the LED lighting system from voltage spikes, excessive current, and overheating.

Application Field Plans

The LT3796IFE-1#TRPBF finds applications in various LED lighting systems, including: - Indoor and outdoor lighting fixtures - Automotive lighting - Street lighting - Architectural lighting - Display backlighting - Signage and advertising lighting

Alternative Models

Some alternative models that offer similar functionality to the LT3796IFE-1#TRPBF include: - LT3796: Similar specifications and features, but with a different package type (e.g., QFN). - LT3763: A related IC with slightly different characteristics, suitable for high-power LED applications. - LT3957: Offers additional features such as fault protection and synchronization capabilities.

Note: The above list is not exhaustive, and there may be other alternative models available from different manufacturers.

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