The LTC3775 is a high efficiency synchronous step-down switching DC/DC controller that drives an all N-channel power MOSFET stage from a 4.5V to 38V input supply voltage. A patented line feedforward compensation circuit and a high bandwidth error amplifier provide very fast line and load transient response. High step-down ratios are made possible by a low 30ns minimum on-time, allowing extremely low duty cycles. MOSFET RDS(ON) current sensing maximizes efficiency. Alternatively, a sense resistor can be used for higher current limit accuracy. Continuous monitoring of the voltages across the top and bottom MOSFETs allows cycle-by-cycle control of the inductor current, configurable by external resistors. The soft-start function controls the duty cycle during start-up, providing a smooth output voltage ramp up. The operating frequency is user programmable from 250kHz to 1MHz and can be synchronized to an external clock. Applications * Automotive Systems * Telecom and Industrial Power Supplies * Point of Load Applications * Wide VIN Range: 4.5V to 38V * Line Feedforward Compensation * Low Minimum On-Time: tON(MIN) < 30ns * Powerful On-board MOSFET Drivers * Leading Edge Modulation Voltage Mode Control * ±0.75%, 0.6V Reference Voltage Accuracy Over Temperature * VOUT Range: 0.6V to 0.8VIN * Programmable, Cycle-by-Cycle Peak Current Limit * Sense Resistor or RDS(ON) Current Sensing * Programmable Soft-Start * Synchronizable Fixed Frequency from 250kHz to 1MHz * Selectable Pulse-Skipping or Forced Continuous Modes of Operation * Low Shutdown Current: 14μA Typical * Thermally Enhanced 16-Lead MSOP and 3mm × 3mm QFN Packages https://elecena.pl/product/925233/high-frequency-synchronous-step-down-voltage-mode-dc-dc-controller 2009-10-27 https://elecena.pl/product/925233/high-frequency-synchronous-step-down-voltage-mode-dc-dc-controller 2017-10-12 https://elecena.pl/product/925233/high-frequency-synchronous-step-down-voltage-mode-dc-dc-controller 2025-01-18