Low IQ High Light Load Efficiency Synchronous Boost Converter
AIC3412
FEATURES
Low IQ High Light Load Efficiency Synchronous Boost Converter
DESCRIPTION
Deliver 3.3V at 60mA...
Description
AIC3412
FEATURES
Low IQ High Light Load Efficiency Synchronous Boost Converter
DESCRIPTION
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 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 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 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: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
DS-3412G-03 20141105
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AIC3412
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