LT3796IFE#PBF

Product Overview

Category

The LT3796IFE#PBF 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#PBF offers high efficiency power conversion, making it suitable for energy-efficient lighting solutions.
• Wide input voltage range: It can operate with input voltages ranging from 4.5V to 100V, allowing flexibility in various lighting applications.
• Dimming control: The IC provides versatile dimming control options, enabling precise adjustment of light output.
• Fault protection: It incorporates comprehensive fault protection features, ensuring reliable operation and safeguarding against potential failures.

Package

The LT3796IFE#PBF is available in a compact 28-lead TSSOP package, which facilitates easy integration into lighting system designs.

Essence

The essence of LT3796IFE#PBF lies in its ability to efficiently drive and control LED lighting systems, offering flexibility, reliability, and advanced dimming capabilities.

Packaging/Quantity

The IC is typically supplied in reels, with 1,000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Current: Up to 20A
• Switching Frequency: Adjustable up to 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Detailed Pin Configuration

The LT3796IFE#PBF features a 28-pin configuration, with the following key pins:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. VOUT: Output voltage pin
5. DIM: Dimming control input
6. FB: Feedback pin for regulation

For a complete pin configuration diagram, please refer to the datasheet provided by the manufacturer.

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• Versatile dimming control options enable precise adjustment of light output.
• Comprehensive fault protection features ensure reliable operation and system safety.
• High efficiency power conversion minimizes energy losses and maximizes overall system efficiency.
• Adjustable switching frequency provides flexibility in optimizing performance and minimizing electromagnetic interference (EMI).

Advantages and Disadvantages

Advantages

• High efficiency power conversion leads to energy savings.
• Versatile dimming control options allow customization of lighting effects.
• Comprehensive fault protection enhances system reliability.
• Wide input voltage range enables compatibility with different power sources.

Disadvantages

• Limited output current may not be suitable for high-power LED applications.
• Complex pin configuration may require careful PCB layout design.

Working Principles

The LT3796IFE#PBF operates as a synchronous step-down DC/DC converter. It regulates the output voltage by adjusting the duty cycle of the internal power switches. The IC utilizes a constant frequency, current mode architecture to provide stable and efficient power conversion. It incorporates advanced control algorithms to achieve accurate dimming control and fault protection.

Detailed Application Field Plans

The LT3796IFE#PBF finds applications in various LED lighting systems, including: - Residential and commercial lighting - Automotive lighting - Industrial lighting - Architectural lighting - Signage and display lighting

Its wide input voltage range, dimming control capabilities, and fault protection features make it suitable for a broad range of lighting applications.

Detailed and Complete Alternative Models

1. LT3796A: Similar to LT3796IFE#PBF but with extended temperature range (-40°C to 150°C).
2. LT3796B: Improved version with higher output current capability (up to 30A).
3. LT3796G: Green package variant with lead-free and RoHS compliance.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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