SY20417AAC - 0.7V Minimum Input, Fixed Output 100mA Maximum Output Current Synchronous Boost


  • 0.7V Minimum Input Voltage
  • 5.5μA Typical Quiescent Current
  • Input Under Voltage Lockout
  • Bypass Function During Shutdown
  • Low RDS(ON) (Main Switch/Synchronous Switch) at Output: 0.5/0.7Ω
  • Fixed Output Voltage: Fixed 3.3V
  • Typical 350mA Peak Current Limit
  • Compact SOT23-5 Package

Typical Application


SY20417 is a high efficiency, synchronous, current hysteresis control; step-up boost converter designed for single-cell or dual-cell alkaline, NiMH, or NiCd battery-powered applications. It can convert down to 0.7V input voltage. It adopts NMOS for the main switch and PMOS for the synchronous switch.


  • Battery Powered Applications
  • Consumer And Portable Medical Products
  • Personal Care Products
  • Smartphones
  • White or Status LEDs