The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phaselockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging. With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and batterypowered systems. The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. Applications * Industrial, Automotive, Medical, Military, Avionics * 4-Switch Current Mode Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT * Wide VIN Range: 4.5V to 150V * Wide Output Voltage Range: 1.2V ≤ VOUT ≤ 150V * Synchronous Rectification: Up to 99% Efficiency * ±1% 1.2V Voltage Reference * Input or Output Average Current Limit * On-Board LDO or External NMOS LDO for DRVCC * 36V EXTVCC LDO Powers Drivers * Programmable 6V to 10V DRVCC Optimizes Efficiency * No Top FET Refresh Noise in Boost or Buck Mode * VOUT Disconnected from VIN During Shutdown * Phase-Lockable Fixed Frequency (50kHz to 600kHz) * No Reverse Current During Start-Up * Power Good Output Voltage Monitor * 150V Rated RUN Pin with Accurate Turn-On Threshold * Programmable Input Overvoltage Lockout * Thermally Enhanced FE38 TSSOP Package Modified for High Voltage Operation https://elecena.pl/product/9732841/150v-v-and-v-synchronous-4-switch-buck-boost-controller 2017-08-09 https://elecena.pl/product/9732841/150v-v-and-v-synchronous-4-switch-buck-boost-controller 2025-01-17