Texas Instruments

LM5143QRHARQ1  

DC DC Switching Controllers

The LM5143QRHARQ1 is a high-efficiency LED driver IC from Texas Instruments. It is designed to provide efficient and reliable power management for LED lighting applications. Here is a brief description of the model, its features, and applications:

Description:

The LM5143QRHARQ1 is a step-down LED driver IC that uses a constant off-time architecture to achieve high efficiency and low EMI. It is available in a small, thermally enhanced QFN package, making it suitable for space-constrained applications.

Features:

1. High efficiency: The LM5143QRHARQ1 achieves high efficiency levels of up to 96%, reducing power consumption and heat generation.
2. Constant off-time architecture: This architecture minimizes EMI and allows for simple filtering, reducing the size and cost of external components.
3. Wide input voltage range: The IC supports a wide input voltage range of 4.5V to 40V, making it suitable for various power supply options.
4. High-power factor: The LM5143QRHARQ1 has a power factor of up to 0.9, which is essential for energy-efficient lighting systems.
5. Programmable current and voltage: The IC allows for programmable LED current and output voltage, providing flexibility in designing LED lighting systems.
6. Integrated power MOSFETs: The LM5143QRHARQ1 features integrated power MOSFETs, reducing the need for external components and simplifying the design.
7. Over-current protection: The IC provides over-current protection to prevent damage to the LEDs and other components in case of a fault.
8. Thermal management: The QFN package with exposed thermal pad helps in efficient heat dissipation.

Applications:

1. LED lighting: The LM5143QRHARQ1 is ideal for various LED lighting applications, including automotive, industrial, and consumer lighting.
2. Streetlights: The high efficiency and programmable features make it suitable for streetlight applications, where energy efficiency and long lifetime are crucial.
3. Backlighting: The IC can be used for backlighting applications in LCD displays, providing efficient power management and reducing power consumption.
4. Emergency lighting: The LM5143QRHARQ1 can be used in emergency lighting systems, where reliable and efficient power management is essential.
5. Architectural lighting: The programmable features and high efficiency make the IC suitable for architectural lighting applications, where custom lighting effects and energy efficiency are important.

In summary, the LM5143QRHARQ1 is a high-efficiency LED driver IC from Texas Instruments that offers various features like constant off-time architecture, programmable current and voltage, and integrated power MOSFETs. It is suitable for a wide range of LED lighting applications, including automotive, industrial, and consumer lighting, as well as backlighting and emergency lighting systems.

LM5143QRHARQ1 Documents

Download datasheets and manufacturer documentation for LM5143QRHARQ1

Datasheets :

LM5143A-Q1