The LTC3828 is a dual high performance step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows for a phase-lockable frequency of up to 550kHz. The TRCKSS pin provides both soft-start and tracking functions. Multiple LTC3828s can be daisy-chained in applications requiring more than two voltages to be tracked. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The precision 0.8V reference and power good output indicator are compatible with a wide 4.5V to 28V (30V maximum) input supply range, encompassing all battery chemistries. The RUN pins control their respective channels independently. The FCB/PLLIN pin selects among Burst Mode® operation, skip-cycle mode and continuous current mode. Current foldback limits MOSFET dissipation during short-circuit conditions. Reverse current and current foldback functions are disabled during soft-start. Applications * Telecom Infrastructure * ASIC Power Supply * Industry Equipment * Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise * Tracking for Both Outputs * Constant Frequency Current Mode Control * Wide VIN Range: 4.5V to 28V Operation * Power Good Output Voltage Indicator * Adjustable Soft-Start Current Ramping * Foldback Output Current Limiting-Disabled at Start-Up * No Reverse Current During Soft-Start Interval * Clock Output for 3-, 4-, 6-Phase Operation * Dual N-Channel MOSFET Synchronous Drive * ±1% Output Voltage Accuracy * Phase-Lockable Fixed Frequency 260kHz to 550kHz * OPTI-LOOP® Compensation Minimizes COUT * Very Low Dropout Operation: 99% Duty Cycle * Output Overvoltage Protection * Small 28-Lead SSOP and 5mm × 5mm QFN Packages https://elecena.pl/product/259959/dual-2-phase-step-down-controller-with-tracking 2007-03-04 https://elecena.pl/product/259959/dual-2-phase-step-down-controller-with-tracking 2014-06-11 https://elecena.pl/product/259959/dual-2-phase-step-down-controller-with-tracking 2025-01-20