SY20153QUC - Ultra Low Quiescent Current, 2.0MHz, 3.5A Buck


  • Input voltage range: 2.5V to 5.5V
  • 2.0 MHz switching frequency
  • 3.5A maximum output current
  • Peak current mode control for the fast transient speed
  • 100% drop out function
  • Typical 18uA quiescent current
  • Low RDS(ON) for internal switches (PFET/NFET): 55mΩ/35mΩ
  • Hic-cup mode protection for hard short condition
  • RoHS Compliant and Halogen Free
  • Compact package: QFN2x1.5-8

Typical Application


SY20153 is a high efficiency ultra low quiescent current, 2.0MHz synchronous step-down DC-DC regulator IC capable of delivering up to 3.5A output current.
SY20153 operates over a wide input voltage range from 2.5V to 5.5V and integrates main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.


  • Set Top Box
  • Net PC
  • Mini-Notebook PC
  • Access Point Router