Linear Technology introduced the application for lithium-powered DC / DC converter

Linear Technology Corporation (Linear Technology) issued a use of 2 × 3mm DFN and LM75CIMX-5 datasheet and 8-pin thin ThinSOT package constant frequency current mode step-down DC / DC Controller - LTC3772. New devices using 2.75V ~ 9.8V input voltage operation down to 0.8V voltage to provide the maximum output current of 5A, it applies to single and LM75CIMX-5 price and dual-core lithium-ion battery powered applications. The No RSENSE architecture can save the need for using the current sense resistor, thereby improving efficiency and LM75CIMX-5 suppliers and saving board space.In the light load

LTC3772 will automatically switch to Burst Mode (Burst Mode) operation to lower the output current efficiency. In the case of no-load consumption of only 40μA of quiescent current. And has integrated under-voltage lockout function, the input voltage falls below 2V, the device turned off. To get the longest usage time on battery power, the external P-channel MOSFET in linear step-down mode on continuously (100% duty cycle). 550kHz switching frequency allows designers to use small inductors and capacitors. In addition, the internal software system can smooth start the output voltage smoothly increases from zero value to the regulator.

LTC3772EDDB ultra-thin (0.75mm) 2 × 3mm DFN-8 package, are also available. The LTC3772ETS8 8-pin ThinSOT package. 1,000 set-up, are $ 1.85 starting price.