LT3965EFE#TRPBF

Product Overview

Category

The LT3965EFE#TRPBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for driving LED strings in backlighting applications, making it suitable for use in various display devices such as LCD monitors, televisions, and automotive displays.

Characteristics

• High efficiency: The LT3965EFE#TRPBF offers high efficiency through its internal 2.8A, 45V switch.
• Wide input voltage range: It can operate with an input voltage ranging from 4.5V to 40V, allowing flexibility in different power supply configurations.
• Dimming control: The IC provides versatile dimming control options, including analog, PWM, and I²C interface.
• Fault protection: It incorporates various fault protection features such as open LED detection, overvoltage protection, and thermal shutdown.

Package

The LT3965EFE#TRPBF is available in a 28-lead TSSOP package, which ensures ease of integration into circuit designs.

Essence

The essence of LT3965EFE#TRPBF lies in its ability to efficiently drive LED strings in backlighting applications, providing reliable and flexible dimming control.

Packaging/Quantity

This IC is typically sold in reels, with each reel containing 2500 units.

Specifications

• Input Voltage Range: 4.5V to 40V
• Maximum Output Current: 2.8A
• Switching Frequency: Up to 2MHz
• Dimming Control Options: Analog, PWM, I²C
• Operating Temperature Range: -40°C to 125°C
• Package Type: 28-Lead TSSOP

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VCC: Supply voltage for internal circuitry
4. SDI: Serial data input for I²C interface
5. SDO: Serial data output for I²C interface
6. SCK: Serial clock input for I²C interface
7. PWM: Pulse width modulation dimming control input
8. ADJ: Analog dimming control input
9. EN/UVLO: Enable and undervoltage lockout control pin
10. FB: Feedback pin for regulating LED current
11. LX: Switch node connection for driving LED strings 12-15. NC: No connection
12. OVLO: Overvoltage lockout pin
13. OVP: Overvoltage protection pin
14. OCSET: Current sense resistor connection
15. PGND: Power ground pin
16. AGND: Analog ground pin 21-28. NC: No connection

Functional Features

1. High Efficiency: The LT3965EFE#TRPBF incorporates a high-efficiency switch, resulting in minimal power losses during LED string operation.
2. Versatile Dimming Control: It offers multiple dimming control options, including analog, PWM, and I²C interface, allowing precise adjustment of LED brightness.
3. Fault Protection: The IC includes various fault protection features such as open LED detection, overvoltage protection, and thermal shutdown, ensuring the safety and reliability of the LED backlighting system.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Wide input voltage range enables compatibility with different power supply configurations.
• Versatile dimming control options provide flexibility in adjusting LED brightness.
• Fault protection features enhance system reliability.

Disadvantages

• Limited to driving LED strings in backlighting applications, not suitable for other power management purposes.
• Availability in a specific package may limit compatibility with certain circuit designs.

Working Principles

The LT3965EFE#TRPBF operates by regulating the current flowing through LED strings in backlighting applications. It utilizes an internal switch to efficiently drive the LEDs, while the feedback mechanism ensures precise control of LED current. The dimming control options allow adjustment of LED brightness according to the desired level. Fault protection features safeguard the system from potential failures, ensuring reliable operation.

Detailed Application Field Plans

The LT3965EFE#TRPBF finds extensive application in various display devices, including: - LCD monitors and televisions - Automotive displays - Industrial control panels - Signage and advertising boards

Its ability to drive LED strings efficiently and provide versatile dimming control makes it suitable for these applications, where backlighting plays a crucial role in enhancing visual quality.

Detailed and Complete Alternative Models

1. LT3964EFE#TRPBF: Similar to LT3965EFE#TRPBF, but with a lower maximum output current of 1.6A.
2. LT3966EFE#TRP