• 3V to 5.5V Input Range
• 30V Maximum Output Voltage
• 1 µA Shutdown Current (Typ.)
• 380 µA Quiescent Current (Typ.)
• Programmable Peak Current Limit
• Programmable Constant Off-Time
• Low RDS(ON) for Internal 9A N-Channel MOSFET: 65mΩ
• Internal Soft-Start 
• RoHS-Compliant and Halogen-Free
• Compact DFN3mm×3mm-10 Package

The SY21299 high efficiency step-up regulator operates using current mode control over an input voltage range from 3V to 5.5V. It integrates an N-channel MOSFET with low 65mΩ RDS(ON) to minimize conduction loss. A built-in internal softstart circuitry minimizes inrush current at startup.

The device offers cycle-by-cycle overcurrent and thermal shutdown protections.

The SY21299 is available in a compact DFN3×3- 10 package