SY21249F Datasheet | Silergy

High Efficiency,Fast Response, 11A, 28V Input Synchronous Buck Converter with 100mA 5V LDO General Description The SY21249F is a high efficiency synchronous buck converter capable of delivering up to 11A current. It integrates low RDS(ON) top and bottom MOSFETs to minimize the conduction loss. It operates at pseudoconstant frequency of 600kHz, to enable the use of small size inductor and capacitors. The SY21249F integrates a fixed 5V LDO with 100mA current capability, which can be used to power the external peripheries, such as the keyboard controller in the notebook. The 5V LDO can switch to bypass input to reduce power loss. Silergy’s constant on-time and ripple-based control...