SY21282QDC - High Efficiency 1MHz,16V,6A Synchronous Step Up Regulator with Accurate Output Current Limit


  • Synchronous Rectification for High Efficiency
  • Low RDS(ON)  Internal Switch

Main FET:80mΩ

Rectifier FET:40mΩ

Disconnection FET:40mΩ

  • Programmable Output Current Limit
  • Enable Control
  • Input Voltage UVLO
  • Output Over Voltage Protection
  • Over Temperature Protection
  • Pseudo-constant Frequency:1MHz
  • Output Short Circuit Protection
  • Power Good Indicator
  • True Shutdown Function
  • Compact QFN3×3 Package

Typical Application


SY21282 develops a high efficiency synchronous Boost regulator with programmable output current limit. The device adopts adaptive constant off time and current mode control. The integrated low RDS(ON) switches minimize the conduction loss.

SY21282 features cycle-by-cycle peak current limit, output short circuit protection and true shutdown. The device also provides enable control and power good indicator for system sequence control. Low output voltage ripple and small external inductor and capacitor size are achieved with 1MHz pseudo-constant frequency.


  • Power Bank
  • High Power Application
  • SSD