The AP3211KTR-G1 is a switching voltage regulator manufactured by Diodes Incorporated. It is a 1.4MHz, 1.5A Asynch DC/DC 4.5V to 18V with features such as an Input Voltage Range of 4.5V to 18V, Output Voltage Range of 4.5V to 18V, Operating Frequency of 1.4MHz, and Switch Current Limit up to 1.5A. It can provide the stable output voltage from 4.5V to 18V and supports fast current transient response. It has a high efficiency level of up to 92%, and the built-in Soft-Start feature ensures a reliable output voltage. Additionally, it has an integrated loop compensation circuit, ESD protection and over-temperature protection. It is ideal for applications such as Point of Load (POL) and Auxiliary Regulators in telecom and computer systems.