LT3795EFE#PBF

Product Overview

Category

The LT3795EFE#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 is commonly used in lighting applications.

Characteristics

• High efficiency: The LT3795EFE#PBF offers high efficiency power conversion, making it suitable for energy-efficient lighting solutions.
• Wide input voltage range: It can operate with a wide input voltage range, allowing flexibility in various lighting applications.
• Dimming control: The IC provides dimming control options, enabling adjustable brightness levels in LED lighting systems.
• Protection features: It incorporates protection features such as overvoltage and overcurrent protection, ensuring safe operation and preventing damage to the LEDs.

Package

The LT3795EFE#PBF is available in a small form factor 28-lead TSSOP (Thin Shrink Small Outline Package), which facilitates easy integration into compact designs.

Essence

The essence of the LT3795EFE#PBF lies in its ability to efficiently drive LEDs, providing a reliable and versatile solution for lighting applications.

Packaging/Quantity

The IC is typically packaged 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
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Detailed Pin Configuration

The LT3795EFE#PBF has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Supply voltage for internal circuitry
4. VREF: Reference voltage output
5. FB: Feedback pin for regulating the output voltage
6. COMP: Compensation pin for stability control
7. SS: Soft-start pin for controlling the startup behavior
8. RT/CLK: External resistor or clock input for setting the switching frequency
9. SYNC/ADJ: Synchronization or adjustable dimming control input
10. DIM: Dimming control input
11. EN/UVLO: Enable or undervoltage lockout control input 12-19. SW1-SW8: Switching node pins
12. PGND: Power ground pin 21-28. LX1-LX8: LED current sink pins

Functional Features

• High-efficiency LED driver: The LT3795EFE#PBF efficiently drives LEDs, minimizing power losses and maximizing energy conversion.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for various lighting applications.
• Adjustable dimming control: The IC allows for flexible dimming control options, enabling precise brightness adjustment in LED lighting systems.
• Protection features: It incorporates overvoltage and overcurrent protection, safeguarding the LEDs from potential damage.
• Compact form factor: The small package size facilitates space-saving integration into lighting designs.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Wide input voltage range offers flexibility in different applications.
• Dimming control allows adjustable brightness levels.
• Protection features ensure safe operation and prevent LED damage.
• Compact package enables easy integration into space-constrained designs.

Disadvantages

• Limited output current capability compared to some other LED drivers.
• Requires external components for proper operation.

Working Principles

The LT3795EFE#PBF operates as a constant current LED driver. It regulates the LED current by adjusting the duty cycle of the internal switching regulator. The IC uses a feedback mechanism to monitor and control the output voltage, ensuring stable LED current regardless of input voltage variations.

The dimming control feature allows the user to adjust the brightness of the LEDs by modulating the duty cycle or using an external PWM signal. This flexibility enables dynamic lighting effects and power savings.

Detailed Application Field Plans

The LT3795EFE#PBF finds applications in various lighting scenarios, including but not limited to: - Indoor and outdoor LED lighting systems - Automotive lighting - Architectural lighting - Display backlighting - Signage and advertising lighting

Its versatility and high efficiency make it suitable for both residential and commercial lighting applications.

Detailed and Complete Alternative Models

1. LT3796: Similar to LT3795EFE#PBF with additional features like fault protection and synchronization capabilities.
2. LT3763: Offers higher output current capability while maintaining similar functionality.
3. LT3957: Designed for driving multiple strings of LEDs, suitable for large-scale lighting