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30μA IQ Synchronous Step-Down Controller
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LTC3834
30µA IQ Synchronous
Step-Down Controller
DESCRIPTION FEATURES n n n n n n n n n n n n n n n n n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V
Low Operating Quiescent Current: 30µA
OPTI-LOOP® Compensation Minimizes COUT
±1% Output Voltage Accuracy
Wide VIN Range: 4V to 36V
Phase-Lockable Fixed Frequency 140kHz to 650kHz
Dual N-Channel MOSFET Synchronous Drive
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Output Current Foldback Limiting
Power Good Output Voltage Monitor
Clock Output for PolyPhase® Applications
Output Overvoltage Protection
Low Shutdown IQ: 4µA
Internal LDO Powers Gate Drive from VIN or VOUT
Selectable Continuous, Pulse Skipping or
Burst Mode® Operation at Light Loads
Small 20-Lead TSSOP or 4mm × 5mm QFN Package The LTC®3834 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 …