• 3V to 16V Input Voltage Range 
• Up to 15A Output Current
• Programmable Output Current Limit
• Low RDS(ON) for Internal N-Channel MOSFET: 9mΩ Main, 12mΩ Rectifier, 12mΩ Disconnection FET
• Programmable Pseudoconstant Frequency
• Enable Control
• Input Voltage UVLO
• Output Overvoltage Protection
• Overtemperature Protection
• Output Short-Circuit Protection
• True Shutdown Function
• RoHS-Compliant and Halogen-Free
• Compact QFN4mm×4mm-18 Package

The SY21305A high efficiency synchronous stepup regulator operates using adaptive constant offtime and current mode control, and can deliver 15A current over a wide input voltage range from 3V to 16V. It integrates switches with low RDS(ON) to minimize conduction loss.

The SY21305A features cycle-by-cycle peak current limit, output short-circuit protection, and true shutdown. It also provides enable control and power-good indicator for system sequence control. The programmable pseudoconstant frequency reduces output voltage ripple and permits smaller external capacitors and inductor.

The SY21305A is available in a compact QFN4×4- 18 package.