The LM2791LD-H/NOPB is a high-performance, charge-pump-based LED driver from the renowned semiconductor manufacturer, Texas Instruments. This compact and efficient device is designed to provide a constant current source to drive white LEDs, which are commonly used in portable applications such as mobile phones, PDAs, and other handheld devices.

Key Features

• Adjustable Output Voltage: The LM2791LD-H/NOPB is capable of adjusting its output voltage to efficiently drive LEDs at a constant current, ensuring consistent brightness and improved battery life.
• High Efficiency: With its charge pump technology, this LED driver achieves high efficiency, which is crucial for battery-operated devices where power conservation is key.
• Small Footprint: The device comes in a compact LLP-10 package, making it an ideal choice for space-constrained applications.
• Low Noise Operation: The LM2791LD-H/NOPB operates at a fixed frequency with a non-overlapping switching pattern to minimize noise, which is essential for RF and audio-sensitive applications.

Applications

The versatility of the LM2791LD-H/NOPB allows it to be used in a wide range of applications. It is especially well-suited for:

• Mobile phones and smartphones
• Personal digital assistants (PDAs)
• Portable media players
• Handheld gaming devices
• Other battery-powered devices with LED backlighting requirements

Technical Specifications

• Input Voltage Range: 2.7V to 5.5V, accommodating a variety of power sources.
• Output Current: Up to 30mA per LED, providing sufficient power for bright and consistent illumination.
• Thermal Protection: Built-in thermal shutdown feature protects the device from overheating, enhancing its reliability and lifespan.

The LM2791LD-H/NOPB is a testament to Texas Instruments' commitment to providing innovative, high-quality components for the electronics industry. Its combination of efficiency, compactness, and performance makes it an excellent choice for designers looking to enhance the user experience of their portable devices with superior LED backlighting solutions.