The LM2797MM-1.8/NOPB is a high-efficiency charge pump-based, dual-display white LED driver produced by Texas Instruments, a leader in semiconductor design and manufacturing. This compact and innovative component is specifically designed to provide a stable and efficient power source for driving white LEDs used in dual display applications, such as mobile phones, handheld devices, and other portable electronics that require backlit displays.

Key Features

• Voltage Regulation: The LM2797MM-1.8/NOPB operates with an input voltage range of 2.7V to 5.5V, making it versatile for various battery configurations and ensuring a stable 1.8V output, essential for consistent LED brightness and color.
• Efficiency: Utilizing a fractional charge pump, this driver achieves high efficiency without the need for an inductor, resulting in a simpler and more space-efficient design.
• Current Control: It features 32 exponential dimming steps for accurate control of the LED current, allowing for smooth and precise brightness adjustments to suit user preferences or ambient light conditions.
• Thermal Protection: The device includes over-temperature protection, safeguarding the LED driver from potential damage due to excessive heat.
• Packaging: Supplied in a compact 8-pin VSSOP package, the LM2797MM-1.8/NOPB is designed for space-constrained applications, providing a high-performance solution without a large footprint.

Applications

The LM2797MM-1.8/NOPB is suitable for a wide range of applications that require efficient and reliable LED backlighting. Its primary use is in portable devices with dual displays, including:

• Smartphones and feature phones
• Personal digital assistants (PDAs)
• Portable media players
• Handheld gaming devices
• Other devices with dual display requirements

Environmental and Quality Certifications

The "NOPB" suffix in the part number indicates that this product is part of Texas Instruments' green initiative, standing for "No Lead (Pb)" and signifying that the component is RoHS compliant. This reflects TI's commitment to environmental sustainability while maintaining high standards of quality and reliability.