The LTC3772B is a constant frequency current mode step-down DC/DC controller in a low profile 8-lead SOT-23 (ThinSOT™) and a 3mm × 2mm DFN package. The No RSENSE™ architecture eliminates the need for a current sense resistor, improving efficiency and saving board space. The LTC3772B automatically switches into pulse skipping operation at light loads. It consumes only 200μA of quiescent current under a no-load condition. The LTC3772B incorporates an undervoltage lockout feature that shuts down the device when the input voltage falls below 2V. To maximize the runtime from a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle). High switching frequency of 550kHz allows the use of a small inductor and capacitors. An internal soft-start smoothly ramps the output voltage from zero to its regulation point. Burst Mode LTC3772 Yes LTC3772B No Applications * 1- or 2-Cell Li-Ion Battery-Powered Applications * Wireless Devices * Portable Computers * Distributed Power Systems * No Current Sense Resistor Required * High Output Currents Easily Achieved * Internal Soft-Start Ramps VOUT * Wide VIN Range: 2.75V to 9.8V * Low Dropout: 100% Duty Cycle * Constant Frequency 550kHz Operation * Low Ripple Pulse Skipping Operation at Light Load https://elecena.pl/product/259652/micropower-no-r-constant-frequency-step-down-dc-dc-controller 2007-03-04 https://elecena.pl/product/259652/micropower-no-r-constant-frequency-step-down-dc-dc-controller 2014-06-28 https://elecena.pl/product/259652/micropower-no-r-constant-frequency-step-down-dc-dc-controller 2025-01-20