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AIC3411

SC-70 Package Low IQ High Light Load Efficiency Synchronous Boost Converter

FEATURES
  • Deliver 3.3V at 60mA from a Single Alka-line/Ni-MH or 3.3V at 120mA from Two Cells
  • Up to 94% Efficiency
  • Low Shutdown Current: <1.0μA
  • Low Quiescent Current: 7.5μA
  • Low No-load Input Current (see Typical Perfor-mance Characteristics for detail)
  • Start up Into Load at 0.7V Input Voltage
  • Output Disconnect by Shutdown Function
  • Anti-ringing Control for EMI Consideration
  • Small SC70-6 Package
APPLICATIONS
  • Wireless Mice
  • Medical Instruments
  • Smart Phones
  • Bluetooth Devices
DESCRIPTION
The AIC3411 is a synchronous step-up DC/DC con-verter. That is based on constant Off Time/PSM con-troller topology. The IC enters PSM mode automatically at light load, the goal is to improve efficiency and re-duce quiescent current. The AIC3411 provide a com-plete power supply solution for products powered by one or two Alkaline, Ni-Cd, or Ni-MH battery cells. It stays in operation with supply voltages down to 0.7V. The implemented boost converter is based on a con-stant Off Time/PSM controller topology using an inter-nal synchronous rectifier to obtain maximum efficiency.
A low-EMI mode is implemented to reduce ringing and in effect lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode.
TYPICAL APPLICATION


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