The TPS53667RTAR is a dual-channel digital voltage regulator controller from Texas Instruments. It is designed to provide low noise and accurate voltage regulation for high efficiency and power-over-Ethernet applications. The TPS53667RTAR is optimized for both positive and negative outputs and supports output voltages from 0.5V up to 3.5V. Its digital control offers low noise, fast loop response and current limitation, as well as excellent performance in the presence of varying output load and line conditions. The device integrates two PMOS pass transistors, current sense amplifiers, voltage sense amplifiers, and two separate voltage reference sources. It also provides a range of features such as flip-mode operation and over-temperature protection.