LT3797EUKG#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High Efficiency, Wide Input Voltage Range, Dimming Control
• Package: 5-Lead TO-263 (D2PAK)
• Essence: Power Management Solution for LED Lighting Applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Current: Up to 60mA
• Switching Frequency: 100kHz to 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C
• Efficiency: Up to 96%

Detailed Pin Configuration

The LT3797EUKG#TRPBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. VOUT: Output Voltage
4. CTRL: Dimming Control
5. FB: Feedback Pin

Functional Features

• Wide input voltage range allows operation in various lighting applications.
• High efficiency ensures minimal power loss and reduced heat generation.
• Dimming control capability enables brightness adjustment.
• Integrated protection features such as overvoltage and overcurrent protection.

Advantages and Disadvantages

Advantages: - High efficiency results in energy savings. - Wide input voltage range provides flexibility in different applications. - Dimming control allows customization of lighting levels. - Integrated protection features enhance reliability.

Disadvantages: - Limited output current may not be suitable for high-power LED applications. - The package size may limit its use in space-constrained designs.

Working Principles

The LT3797EUKG#TRPBF is a step-down DC/DC converter specifically designed for driving LEDs. It utilizes a constant current mode architecture to regulate the LED current. The input voltage is stepped down and converted into a constant current output, ensuring consistent brightness across the LEDs.

The dimming control feature allows the LED brightness to be adjusted by varying the duty cycle of the PWM signal or the analog control voltage applied to the CTRL pin. This enables dynamic lighting effects and power savings.

Detailed Application Field Plans

The LT3797EUKG#TRPBF is widely used in various LED lighting applications, including:

1. General Lighting: Indoor and outdoor lighting fixtures.
2. Automotive Lighting: Headlights, taillights, and interior lighting.
3. Display Backlighting: LCD monitors, TVs, and signage.
4. Architectural Lighting: Accent lighting, landscape lighting, and decorative lighting.
5. Industrial Lighting: Warehouse lighting, street lighting, and high-bay lighting.

Detailed and Complete Alternative Models

1. LT3797A: Similar specifications with additional fault protection features.
2. LT3797B: Higher output current capability for high-power LED applications.
3. LT3797C: Enhanced dimming control options and synchronization capabilities.

These alternative models offer similar functionality but may have specific features tailored to different application requirements.

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