AIC3412
Low IQ High Light Load Efficiency Synchronous Boost Converter
- FEATURES
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- 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
