LT3795IFE#PBF

Product Overview

Category

The LT3795IFE#PBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for driving LEDs (Light Emitting Diodes) and can be used in various lighting applications, such as automotive lighting, architectural lighting, and general illumination.

Characteristics

• High efficiency: The LT3795IFE#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 different power supply configurations.
• Dimming control: The IC provides versatile dimming control options, including analog, PWM, and I2C interface, enabling precise brightness adjustment.
• Fault protection: It incorporates comprehensive fault protection features like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring reliable operation and safeguarding the connected LEDs.

Package

The LT3795IFE#PBF is available in a compact 28-lead TSSOP (Thin Shrink Small Outline Package) package, which facilitates easy integration into space-constrained designs.

Essence

The essence of LT3795IFE#PBF lies in its ability to efficiently drive and control LED lighting systems, offering high performance and reliability.

Packaging/Quantity

The IC is typically supplied in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Current: Up to 1.5A
• Switching Frequency: Adjustable up to 1MHz
• Dimming Control: Analog, PWM, I2C
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Detailed Pin Configuration

The LT3795IFE#PBF features a 28-lead TSSOP package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Internal IC supply voltage
4. FB: Feedback pin for regulating output voltage
5. ADJ: Adjust pin for setting LED current
6. PWM: Pulse Width Modulation dimming control input
7. ISET: Current sense resistor connection
8. SS: Soft-start capacitor connection
9. RT: External resistor for setting switching frequency
10. SYNC: Synchronization input for multiple ICs
11. VREF: Reference voltage output
12. AGND: Analog ground
13. SD: Shutdown control input
14. INTVCC: Internal IC supply voltage
15. LX: Switching node connection
16. LX: Switching node connection
17. LX: Switching node connection
18. LX: Switching node connection
19. LX: Switching node connection
20. LX: Switching node connection
21. LX: Switching node connection
22. LX: Switching node connection
23. LX: Switching node connection
24. LX: Switching node connection
25. LX: Switching node connection
26. LX: Switching node connection
27. LX: Switching node connection
28. LX: Switching node connection

Functional Features

• Wide input voltage range allows compatibility with various power supply configurations.
• Versatile dimming control options enable precise brightness adjustment.
• Comprehensive fault protection ensures reliable operation and protects LEDs from damage.
• High efficiency power conversion minimizes energy loss and maximizes system performance.
• Compact package facilitates easy integration into space-constrained designs.

Advantages and Disadvantages

Advantages

• High efficiency power conversion
• Wide input voltage range
• Versatile dimming control options
• Comprehensive fault protection features
• Compact package for easy integration

Disadvantages

• None identified

Working Principles

The LT3795IFE#PBF operates as a high voltage LED driver. It utilizes a boost topology to efficiently convert the input voltage to a higher voltage required for driving LEDs. The IC incorporates a current mode control architecture, which ensures stable and accurate LED current regulation. It also provides various dimming control options, allowing precise adjustment of LED brightness.

Detailed Application Field Plans

The LT3795IFE#PBF finds applications in various lighting systems, including: 1. Automotive lighting: Used in headlights, taillights, and interior lighting. 2. Architectural lighting: Suitable for accent lighting, façade lighting, and landscape lighting. 3. General illumination: Used in residential, commercial, and industrial lighting applications.

Detailed and Complete Alternative Models

1. LT3795EFE#PBF: Similar to LT3795IFE#PBF but available in a 28-lead TSSOP package.
2. LT3795H