LT3752EFE-1

Product Overview

Category

The LT3752EFE-1 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• The LT3752EFE-1 is a high voltage, synchronous, current mode controller.
• It operates over a wide input voltage range and is capable of driving multiple LEDs in series.
• The device offers excellent dimming performance and can be used in various lighting applications.
• It provides a compact solution for LED driver designs.

Package

The LT3752EFE-1 is available in a 28-lead TSSOP package.

Essence

The essence of LT3752EFE-1 lies in its ability to efficiently drive and control high voltage LEDs, making it suitable for various lighting applications.

Packaging/Quantity

The LT3752EFE-1 is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage Range: Up to 80V
• Maximum Switching Frequency: 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3752EFE-1 features a 28-lead TSSOP package with the following pin configuration:

1. VIN: Input voltage pin
2. VCC: Supply voltage pin
3. GND: Ground pin
4. FB: Feedback pin
5. SS: Soft-start pin
6. SYNC: Synchronization pin
7. RT: Timing resistor pin
8. CT: Timing capacitor pin
9. SW: Switch node pin
10. PGND: Power ground pin
11. LX: Inductor connection pin
12. VOUT: Output voltage pin
13. ADJ: Adjustable pin 14-28: Not connected

Functional Features

• High voltage operation enables driving of multiple LEDs in series.
• Synchronous rectification improves efficiency and reduces power dissipation.
• Current mode control provides excellent line and load regulation.
• Soft-start feature prevents excessive inrush current during startup.
• Dimming control options allow for flexible brightness adjustment.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Efficient LED driving capability.
• Compact package size.
• Excellent dimming performance.

Disadvantages

• Limited pin configuration options.
• Requires external components for complete circuit implementation.

Working Principles

The LT3752EFE-1 operates as a synchronous, current mode controller for high voltage LED driver applications. It regulates the output current by adjusting the duty cycle of the internal power switch. The device utilizes a feedback loop to maintain a constant output voltage or current, providing stable and efficient LED illumination.

Detailed Application Field Plans

The LT3752EFE-1 can be used in various lighting applications, including: - Automotive lighting - Industrial lighting - Architectural lighting - Signage lighting - General illumination

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LT3752EFE-1 include: - LT3763 - LT3799 - LT3957 - LT3958

These alternatives provide different package options, pin configurations, and additional features, allowing designers to choose the most suitable solution for their specific requirements.

In conclusion, the LT3752EFE-1 is a high voltage, synchronous, current mode controller IC designed for driving and controlling high voltage LEDs. Its compact size, wide input voltage range, and excellent dimming performance make it a versatile choice for various lighting applications.