The NCP81045 is a sychronous step down controller for high performance system battery power system. The NCP81045 includes high effeciency PWM controller. A pin is provided to allow two devices in interleaved operation. An internal power good voltage monitor tracks the SMPS output. The NCP81045 features soft start, sequence, UVLO for VCC and switcher, overvoltage protection, overcurrent protection, undervoltage protection and thermal shutdown. The IC package is QFN16.