Digi-Key – Current-mode synchronous controller for sub-milliohm DCR sensing (Linear Technology - LTC3866)Jun 27 2012 - Power [More Power Articles]
Now available from Digi-Key, Linear Technology’s LTC3866 is a single-phase current-mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET switches.
The device employs a novel architecture which enhances the signal-to-noise ratio of the current sense signal, allowing the use of a very low DC resistance power inductor to maximize the efficiency in high current applications. This feature also reduces the switching jitter commonly found in low DCR applications. The LTC3866 also includes a high speed remote sense differential amplifier, a programmable current sense limit that can be selected to 10mV, 15mV, 20mV, 25mV or 30mV, and DCR temperature compensation to limit the maximum output current precisely over temperature, says the company.More news from Digikey