LTC3835

FEATURES nn Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V nn Low Operating Quiescent Current: 80µA nn OPTI-LOOP® Compensation Minimizes COUT nn ±1% Output Voltage Accuracy nn Wide VIN Range: 4V to 36V Operation nn Phase-Lockable Fixed Frequency 140kHz to 650kHz nn Dual N-Channel MOSFET Synchronous Drive nn Very Low Dropout Operation: 99% Duty Cycle nn Adjustable Output Voltage Soft-Start or Tracking nn Output Current Foldback Limiting nn Power Good Output Voltage Monitor nn Clock Output for PolyPhase® Applications nn Output Overvoltage Protection nn Low Shutdown IQ: 10µA nn Internal LDO Powers Gate Drive from VIN or VOUT nn Selectable Continuous, Pulse-Skipping or nn Burst Mode® Operation at Light Loads nn Small 20-Lead TSSOP or 4mm × 5mm QFN Package nn AEC-Q100 Qualified for Automotive Applications APPLICATIONS nn Automotive Systems nn Telecom Systems nn Battery-Operated Digital Devices nn Distributed DC Power Systems LTC3835 Low IQ Synchronous Step-Down Controller DESCRIPTION The LTC®3835 is a high performance step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 650kHz. The 80µA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3835 features a precision 0.8V reference and a pow...