SY8386BRHC, SY8386B, QqBTB, QqAZB, Q9A, QqCCC, Qq, QqDKL, Qqeef qQ* qQF

The SY8386B develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 6A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. In addition, it operates at pseudoconstant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor. SY8386B also provides a fixed 3.3V LDO with 100mA current capability, which can be used to power the external peripheries, such as the keyboard controller in notebook. The 3.3V LDO can switch over to Buck regulator output to save power loss.