Consumer portable lighting refers to lighting for applications such as flashlights, sports equipment, headlamps, miner lights, and bicycle head or tail lights. The advantages of using LEDs in these applications versus halogen lights, for example, are that they provide longevity, flexibility in terms of dimming, and instantaneous turn on and turn off. As mentioned earlier, the LM3405A LED driver is a current mode control buck switching regulator that is designed to provide a simple, high efficiency solution in applications including portable consumer. The LM3410 buck regulator decreases the feedback voltage for increased efficiency and adds a dim pin for PWM dimming.