SY20018LACC - High Efficiency 1.5MHz, 1A Buck


  • Low RDS(ON) for internal switches (top/bottom) 260mΩ/170mΩ
  • 2.5~5.5V input voltage range
  • 40μA typical quiescent current
  • High light load efficiency
  • High switching frequency 1.5MHz minimizes the external components
  • Internal soft-start limits the inrush current
  • 100% dropout operation
  • RoHS Compliant and Halogen Free
  • Compact package: TSOT23-5

Typical Application


SY20018L is a high efficiency 1.5MHz synchronous step down DC/DC regulator IC capable of delivering up to 1A output current. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.


  • Portable Navigation Device
  • Set Top Box
  • USB Dongle
  • Media Player
  • Smart phone