SY20411AHC - 0.7V Minimum Input and 5.25V Maximum Output Synchronous Boost Converter


  • Typical 0.7V Minimum Input Voltage
  • Adjustable Output Voltage from 1.8V to 5.25V
  • 18uA Quiescent Current
  • Pass-through Function During Shutdown
  • Output Over Voltage Protection
  • Low RDS(ON) (Main Switch/Synchronous Switch) at 3.3V Output: 0.45/0.80ohm
  • Typical 400ma Peak Current Limit
  • Typical Fixed 750ns Off Time
  • Maximum output current

---50mA@0.9VIN and 3.3VOUT

---100mA@1.8VIN and 3.3VOUT

  • Compact SOT-363(SC70)

Typical Application


SY20411 is a high efficiency, low input voltage, step-up synchronous boost converter designed for single-cell or dual-cell alkaline, NiMH, or NiCd battery-powered applications. It can receive an input voltage as low as 0.7V. It adopts NMOS for the main switch and PMOS for the synchronous switch.


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