Even in the event of large power supply variations, this REF02BUE4 voltage reference power management device from Texas Instruments can produce and maintain a precise DC voltage. With an output that has a voltage of 5 V, this is power management at its best. It has an initial accuracy of 0.2%. This will operate at a maximum voltage of 40 V, making it easy to control the power in your circuit. This voltage reference circuit supports series topology. Using a load regulation of 0.008%/mA and line regulation of 0.01%/V is needed for a programmable DC power supply. In order to ensure parts aren"t damaged by bulk packaging, this product comes in tube packaging to add a little more protection by storing the loose parts in an outer tube. This voltage reference circuit has an operating temperature range of -40 °C to 85 °C. It runs with a maximum temperature coefficient of 10ppm/°C.