NCP1550SN33T1

NCP1550SN33T1 DC/DC降压转换电源IC 3.3V SOT-153/TSOP-5/SOT23-5 marking/标记 DCD 600 kHz的PWM/PFM降压型DC-DC控制器

600 kHz PWM/PFM Step−Down DC−DC Controller • High Efficiency 92%, Typical • Low Quiescent Bias Current of 50 A Typical at PFM Mode with No Load • Output Voltage Options from 1.8 V to 3.3 V with High Accuracy 2.0% • Low Output Voltage Ripple, 50 mV, Typical • PWM Switching Frequency at 600 kHz • Automatic PWM/PFM Switchover at Light Load Condition • Very Low Dropout Operation, 100% Max. Duty Cycle • Chip Enable Pin with On−Chip 150 nA Pullup Current Source • Low Shutdown Current, 0.3 A, Typical • Input Voltage Range from 2.45 V to 5.5 V • Built−in Soft−Start • Internal Undervoltage Lockout UVLO Protection • Low Profile and Minimum External Components • Micro Miniature TSOP−5 Package • Pb−Free Packages are Available • Personal Digital Assistant PDA • Camcorders and Digital Still Camera • Hand−Held Instrument • Distributed Power System • Computer Peripheral