SY21249C1 Datasheet | Silergy

High-Efficiency Fast-Response, 11A, 24V Input Synchronous Step-Down Regulator General Description The SY21249C1 high-efficiency synchronous stepdown DC/DC regulator is capable of delivering 11A current over a wide input voltage range of 5.5V to 24V. To minimize conduction loss, it integrates a main switch and a synchronous switch with very low RDS(ON). It operates at a pseudoconstant frequency of 600kHz under heavy load conditions to minimize inductor and capacitor sizes. The SY21249C1 also provides a fixed 5V LDO with 100mA current capability, which can be used to power external peripherals. Under light load conditions, the LDO can be switched over to the buck regulator output...