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.

• 0.8% accuracy 0.8 V Reference
• 4.5 V to 27 V battery/adapter voltage range
• Adjustable output voltage range: 0.8 V to 3.3 V
• Synchronization Interleaving between Two NCP81045s
• Skip mode for power saving operation at light load
• Lossless inductor current sensing
• Programmable transient response enhancement (TRE) control
• Programmable adaptive voltage positioning (AVP)
• Input supply feedforward control
• Internal SoftStart
• Integrated output discharge (SoftStop)
• Built-in adaptive gate drivers
• PGOOD indication
• Overvoltage, undervoltage and overcurrent protection
• Thermal shutdown