SY21306RAC - High Efficiency, 16V, 10A Synchronous Step Up Regulator


  • Input Range: 2.8-16V
  • Programmable Pseudo-constant Frequency: 300kHz-2MHz
  • Low RDS(ON)  for  Internal Switch

Main FET: 10mΩ

Rectifier FET: 20mΩ

  • PFM/PWM Selectable Light Load Operation Mode
  • Internal Loop Compensation
  • Programmable Peak Current Limit
  • Internal Soft-start Time Limit the Inrush Current
  • Input Voltage UVLO
  • Over Temperature Protection
  • Over Voltage Protection
  • RoHS Compliant and Halogen Free
  • Compact Package:QFN3×3-20

Typical Application


The SY21306 is a high efficiency, high power density synchronous Boost regulator. The device adopts adaptive constant off time and current mode control. The integrated low RDS(ON) switches minimize the conduction loss.

The SY21306 provides selectable PFM/PWM light load operation mode. The device features cycle by cycle peak current limit. The low output voltage ripple, the small external inductor and the capacitor size are achieved at programmable pseudo-constant frequency.


  • Power Bank
  • High Power AP
  • E-cigarette
  • Bluetooth Speaker