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AIC3412

Low IQ High Light Load Efficiency Synchronous Boost Converter

FEATURES
  • Deliver 3.3V at 60mA from a Single Alkaline Ni-MH or 3.3V at 120mA from Two Cells
  • Up to 94% Efficiency
  • Low Shutdown Current: < 1μA
  • Low Quiescent Current: 12μA.
  • Low No-load Input Current (see Typical Performance Characteristics for detail)
  • Output Disconnect by Shutdown Function
  • Built-in 0.5ms Soft-Start
  • Small SOT23-6 Package
APPLICATIONS
  • Wireless Mice
  • Medical Instruments
  • Smart Phones
  • Bluetooth Devices
DESCRIPTION
The AIC3412 is a synchronous step-up DC/DC converter.
That is base on constant Off Time/PSM controller topology. The IC enters PSM mode automatically at light load, the goal is to improve efficiency and reduce quiescent current. The AIC3412 provide a complete 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 constant Off Time/PSM controller topology using an internal 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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