LT3965EFE-1#TRPBF

Product Overview

Category

The LT3965EFE-1#TRPBF belongs to the category of integrated circuits (ICs) specifically designed for LED lighting applications.

Use

This product is primarily used for driving and controlling high-power LEDs in various lighting systems, such as automotive lighting, architectural lighting, and industrial lighting.

Characteristics

• High efficiency: The LT3965EFE-1#TRPBF offers high efficiency power conversion, resulting in reduced power dissipation and improved energy efficiency.
• Wide input voltage range: It can operate with input voltages ranging from 4V to 36V, making it suitable for a wide range of applications.
• Dimming control: The IC provides versatile dimming control options, including analog, PWM, and I2C interface, allowing precise control over LED brightness.
• Fault protection: It incorporates various protection features like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe operation and preventing damage to the LEDs and the IC itself.

Package

The LT3965EFE-1#TRPBF is available in a small form factor 28-lead TSSOP package, which facilitates easy integration into compact lighting designs.

Essence

The essence of the LT3965EFE-1#TRPBF lies in its ability to efficiently drive and control high-power LEDs, enabling the creation of reliable and energy-efficient lighting systems.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4V to 36V
• Output Current: Up to 1.5A
• Dimming Control Options: Analog, PWM, I2C
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Detailed Pin Configuration

The LT3965EFE-1#TRPBF features the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Supply voltage for internal circuitry
4. EN/UVLO: Enable and undervoltage lockout control
5. PWM: Pulse width modulation dimming control input
6. ADJ: Analog dimming control input
7. ISET: LED current set pin
8. FB: Feedback pin for regulating output voltage
9. LX: Switching node connection
10. SW: Switching node connection
11. PGND: Power ground
12. VOUT: Output voltage
13. SDA: I2C data input
14. SCL: I2C clock input 15-28. NC: No connection

Functional Features

• High-efficiency step-down LED driver
• Wide input voltage range for versatile applications
• Multiple dimming control options for precise brightness adjustment
• Comprehensive fault protection mechanisms for enhanced reliability
• Compact package for space-constrained designs

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation and improved energy efficiency.
• Versatile dimming control options allow for precise control over LED brightness.
• Wide input voltage range enables compatibility with various power sources.
• Fault protection features ensure safe operation and protect the LEDs and IC from damage.

Disadvantages

• Limited maximum output current of 1.5A may not be suitable for high-power LED applications requiring higher currents.
• The small form factor package may pose challenges in thermal management for high-power applications.

Working Principles

The LT3965EFE-1#TRPBF operates as a step-down (buck) LED driver. It converts the higher input voltage to a lower output voltage suitable for driving high-power LEDs. The IC utilizes a switching regulator topology to efficiently regulate the LED current while maintaining high efficiency.

The dimming control options, including analog, PWM, and I2C interface, allow the user to adjust the LED brightness according to specific requirements. The fault protection mechanisms ensure safe operation by monitoring various parameters like voltage, current, and temperature, and taking appropriate actions in case of abnormal conditions.

Detailed Application Field Plans

The LT3965EFE-1#TRPBF finds extensive applications in various lighting systems, including:

1. Automotive Lighting: Used in headlights, taillights, and interior lighting systems in automobiles.
2. Architectural Lighting: Employed in building facades, landscape lighting, and decorative lighting installations.
3. Industrial Lighting: Utilized in high-bay lighting, street lighting, and warehouse lighting applications.
4. Display Lighting: Applied in backlighting for LCD displays, signage, and retail displays.

Detailed and Complete Alternative Models

1. LT3799: A similar LED driver IC with higher maximum output current capability (up to 3A). 2