Description

Low IQ, Dual 2-Phase Synchronous Step-Down Controller Features: Low Operating IQ: 170μA (One Channel On) Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 14V Wide VIN Range: 4V to 24V RSENSE or DCR Current Sensing Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise OPTI-LOOP® Compensation Minimizes COUT Phase-Lockable Frequency (75kHz to 850kHz) Programmable Fixed Frequency (50kHz to 900kHz) Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at Light Loads Very Low Dropout Operation: 99% Duty Cycle Adjustable Output Voltage Soft-Start Power Good Output Voltage Monitor Output Overvoltage Protection Output Latchoff Protection During Short Circuit Low Shutdown IQ: 8μA Internal LDO Powers Gate Drive from VIN or EXTVCC No Current Foldback During Start-Up Small 4mm × 5mm QFN and Narrow SSOP Packages