The LM2751 is a 2X, 1.5X regulated switched capacitor white LED driver. It offers 4.5V and 5.0V regulated output voltage options and provides up to 150mA of output current in the 2.8V to 5.5V input voltage range, requiring only four low-cost ceramic capacitors. It provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or 2. The proper gain for maintaining regulation is chosen so that efficiency is maximized over the input voltage range. The LM2751 uses constant frequency pre-regulation to minimize conducted noise on the input and provide a predictable switching frequency. The switching frequency is programmable to 725kHz, 300kHz, 37kHz, or 9.5kHz. The LM2751 is available in a 10-pin Leadless Leadframe No-Pullback package: LLP-10.