The LTC3869 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out-of-phase. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. A wide 4V to 38V input supply range encompasses most battery chemistries. Independent TK/SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode® operation, pulse-skipping mode, or continuous inductor current mode and allows the IC to be synchronized to an external clock. The LTC3869 is available in low profile 4mm × 4mm and 4mm × 5mm QFN packages. The LTC3869-2 is available in an SSOP-28 package. The LTC3869 is pin-compatible with the LTC3850. Applications * Server Systems * Telecom Systems * Industrial and Medical Instruments * High Power Battery-Operated Devices * DC Power Distribution Systems * Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise * Accurate Multiphase Current Matching * RSENSE or DCR Current Sensing * ±0.75% 0.6V Output Voltage Accuracy * Phase-Lockable Fixed Frequency 250kHz to 780kHz * High Efficiency: Up to 95% * Dual N-channel MOSFET Synchronous Drive * Wide VIN Range: 4V to 38V (40V Max) Operation * Wide VOUT Range: 0.6V to 12.5V Operation * Adjustable Soft-Start Current Ramping or Tracking * Foldback Output Current Limiting * Output Overvoltage Protection * Power Good Output Voltage Monitor * 5V Low Dropout Regulator * Small 28-Lead QFN and Narrow SSOP Packages https://elecena.pl/product/1364801/dual-2-phase-synchronous-step-down-dc-dc-controllers 2011-02-17 https://elecena.pl/product/1364801/dual-2-phase-synchronous-step-down-dc-dc-controllers 2017-10-09 https://elecena.pl/product/1364801/dual-2-phase-synchronous-step-down-dc-dc-controllers 2025-01-21