The LT8641A step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm side wettable QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with a minimal PCB footprint. An ultralow 2.5μA quiescent current — with the output in full regulation — enables applications requiring highest efficiency at very small load currents. Transient response remains excellent and output voltage ripple is below 10mVP-P at any load, from zero to full current. The LT8641A allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 35ns. Operation is safe in overload even with a saturated inductor. Essential features are included and easy to use: an open-drain PG pin signals when the output is in regulation. The SYNC/MODE pin selects between Burst Mode, pulse-skipping, or spread spectrum mode, and also allows synchronization to an external clock. Soft-start and tracking functionality are accessed through the TR/SS pin. An accurate enable threshold can be set using the EN/UV pin and a resistor at the RT pin programs switch frequency. APPLICATIONS * Automotive and Industrial Supplies * General Purpose Step-Down * Silent Switcher® Architecture * Ultralow EMI Emissions * Spread Spectrum Frequency Modulation * High Efficiency at High Frequency * Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT * Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT * Wide Input Voltage Range: 3V to 65V * 3.5A Maximum Continuous, 5A Peak Transient Output * Ultralow Quiescent Current Burst Mode® Operation * 2.5μA IQ Regulating 12VIN to 3.3VOUT * Output Ripple < 10mVP-P https://elecena.pl/product/24155533/65v-3-5a-5a-peak-synchronous-step-down-silent-switcher-with-2-5-a-quiescent-current 2023-09-06 https://elecena.pl/product/24155533/65v-3-5a-5a-peak-synchronous-step-down-silent-switcher-with-2-5-a-quiescent-current 2025-01-20