Description

High Efficiency, 2-Phase, Dual Synchronous Step-Down Switching Controller and Step-Up Regulator Features: Step-Down Controller Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise Power Good Output Voltage Indicator OPTI-LOOP™ Compensation Minimizes COUT DC Programmed Fixed Frequency 150kHz to 300kHz Wide VIN Range: 3.5V to 36V Operation Very Low Dropout Operation: 99% Duty Cycle Adjustable Soft-Start Current Ramping Latched Short-Circuit Shutdown with Defeat Option Remote Output Voltage Sense and OV Protection 5V and 3.3V Standby Regulators Selectable Const. Freq. or Burst Mode™ OperationStep-Up Regulator High Operating Switching Frequency of 1.2MHz Low Internal VCESAT Switch: 400mV @ 1A, VIN = 3V Wide VIN Range: 2.6V to 16V Operation High Output Voltage: Up to 34V