The BCT2057EUK18-TR is a Linear Voltage Regulator (LDO) with SOT-23-5 package manufactured by Broadchip. It is a very low dropout (Vd) regulator with an output voltage of 18V, a quiescent current of 1mA, a line regulation of 0.2%, and a load regulation of 0.6%. This device also has very high peak current capability up to 6A, making it an ideal choice for high power applications. It also features a high ripple rejection of 65dB, a current foldback of 50mA, and an overcurrent protection of 2A. The TO-23-5 package is RoHS compliant and contains five pins, each of which has special functions. This LDO also has excellent temperature stability, making it a suitable choice for use in a variety of applications.