Description

Dual, 2-Phase Step-Down Controller with Tracking Features: 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