AIC3412 Datasheet, PDF (1/9 Pages) Analog Intergrations Corporation – Low IQ High Light Load Efficiency

AIC3412
Low IQ High Light Load Efficiency
Synchronous Boost Converter
 FEATURES
 DESCRIPTION
 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: < 1μA
 Low Quiescent Current: 12μA.
 Low No-load Input Current (see Typical Perfor-
mance Characteristics for detail)
 Output Disconnect by Shutdown Function
 Small SOT23-6 Package
 APPLICATIONS
 Wireless Mice
 Medical Instruments
 Smart Phones
 Bluetooth Devices
The AIC3412 is a synchronous step-up DC/DC con-
verter. That is base 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 AIC3412 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 CIRCUITS
Fig. 1 One Cell Step-Up DC/DC Converter
Analog Integrations Corporation
3A1, 1 Lihsin 1st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: [phone] FAX: [phone]
www.analog.com.tw
DS-3412G-03 20141105
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