The LP3321B6F is a LED driver SOT23-6 RoHS manufactured by LOWPOWER. It is an active-low, constant current output with a wide input voltage range (2.7V to 28V). It has a maximum load current of up to 220mA and is designed to operate in the temperature range of -40C to +85C. It is optimized to achieve a minimum internal current consumption of only 5mA when in shutdown mode. In addition, it features thermal shutdown protection, over-voltage protection, and short circuit protection. The LP3321B6F is ideal for driving small to medium sized LED arrays.