LP5520TLX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics:
  • Compact size
  • High efficiency
  • Programmable LED control
  • Multiple LED channel support
• Package: Thin Shrink Small Outline Package (TSSOP)
• Essence: The LP5520TLX/NOPB is a versatile LED driver IC designed to provide efficient and programmable control for multiple LED channels.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Operating Voltage Range: 2.7V to 5.5V
• Number of LED Channels: 3 independent channels
• Maximum Output Current per Channel: 25mA
• Programmable Current Control: 32 steps per channel
• Interface: I2C-compatible serial interface
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LP5520TLX/NOPB features a 20-pin TSSOP package with the following pin configuration:

1. VLED1
2. VLED2
3. VLED3
4. GND
5. SDA
6. SCL
7. INT
8. EN
9. REXT
10. VDD
11. VBAT
12. NC
13. NC
14. NC
15. NC
16. NC
17. NC
18. NC
19. NC
20. NC

Functional Features

• Independent control of each LED channel
• Programmable current control for precise brightness adjustment
• Support for various LED types, including RGB, white, and infrared LEDs
• Built-in PWM generator for smooth dimming control
• Integrated thermal shutdown and overvoltage protection

Advantages and Disadvantages

Advantages: - Compact size allows for space-saving designs - High efficiency results in reduced power consumption - Programmable LED control enables versatile lighting effects - Multiple LED channel support allows for complex lighting configurations

Disadvantages: - Limited maximum output current per channel (25mA) - Requires an external resistor (REXT) for current control

Working Principles

The LP5520TLX/NOPB operates by receiving commands through the I2C-compatible serial interface. It utilizes a built-in PWM generator to control the brightness of each LED channel. The programmable current control feature allows precise adjustment of the LED currents, ensuring consistent brightness levels.

Detailed Application Field Plans

The LP5520TLX/NOPB is widely used in various applications that require efficient and programmable LED control. Some potential application fields include:

1. Automotive Lighting: Used for interior and exterior lighting in vehicles, such as dashboard illumination, ambient lighting, and headlights.
2. Portable Electronics: Integrated into smartphones, tablets, and wearable devices to provide backlighting, notification indicators, and decorative lighting.
3. Signage and Displays: Employed in advertising displays, digital signage, and large-scale LED screens for vibrant and customizable lighting effects.
4. Gaming and Entertainment: Utilized in gaming consoles, gaming peripherals, and stage lighting systems to enhance visual experiences and create immersive environments.

Detailed and Complete Alternative Models

1. LP5521TLX/NOPB: Similar to LP5520TLX/NOPB but with 4 independent LED channels.
2. LP5525TLX/NOPB: Offers 6 independent LED channels and additional features like LED fault detection and diagnostics.
3. LP5569TLX/NOPB: Provides 9 independent LED channels and advanced features like color mixing and LED pattern sequencing.

These alternative models offer increased flexibility and functionality for different LED driver requirements.

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