250kHz, 1mA IQ constant frequency switcher tames portable systems power
Bob Essaff
Abstract
The LT1373, a 250kHz, 1mA IQ constant frequency switcher, is described.
Keywords
Current mode switching regulator
LT1373
DC-to-DC power conversion remains one of the toughest tasks for portable system designers. Dealing with various battery technologies and output voltage requirements dictates the need for creative circuit solutions. The two circuits discussed are tailored for operation from a single lithium-ion (Li-Ion) cell. These new batteries are finding widespread use due to their high energy storage capabilities. The first circuit has a 3.3V output and the second circuit has both 5V and −5V outputs for applications requiring ...
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