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NCP1587ADR2G Datasheet(PDF) 4 Page - ON Semiconductor |
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NCP1587ADR2G Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 16 page NCP1587, NCP1587A http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (0_C < TA < 70_C; 4.5 V < VCC < 13.2 V, 4.5 V < [BST−PHASE] < 13.2 V, 4.5 V < BST < 30 V, 0 V < PHASE < 21 V, CTG = CBG = 1.0 nF, for min/max values unless otherwise noted.) Characteristic Conditions Min Typ Max Unit Input Voltage Range − 4.5 − 13.2 V Boost Voltage Range − 4.5 − 26.5 V Supply Current Quiescent Supply Current VFB = 1.0 V, No Switching, VCC = 13.2 V 1.0 − 8.0 mA Boost Quiescent Current VFB = 1.0 V, No Switching, VCC = 13.2 V 0.1 − 1.0 mA Under Voltage Lockout UVLO Threshold VCC Rising Edge 3.8 − 4.2 V UVLO Hysteresis − − 350 − mV Switching Regulator VFB Feedback Voltage, Control Loop in Regulation TA = 0 to 70°C 792 800 808 mV Oscillator Frequency NCP1587 NCP1587A TA = 0 to 70°C 250 180 275 200 300 220 kHz Ramp−Amplitude Voltage 0.8 1.1 1.4 V Minimum Duty Cycle 0 − − % Maximum Duty Cycle 70 75 80 % Error Amplifier (GM) Transconductance 3.0 − 4.4 mmho Open Loop DC Gain 55 70 − DB Output Source Current Output Sink Current VFB < 0.8 V VFB > 0.8 V 80 80 120 120 − − mA Input Bias Current − 0.1 1.0 mA Soft−Start SS Source Current VFB < 0.8 V − 11 − mA Switch Over Threshold VFB = 0.8 V − 100 − % of Vref Gate Drivers Upper Gate Source VCC = 12 V, VTG = VBG = 2.0 V − 1.0 − A Upper Gate Sink − 1.0 − A Lower Gate Source − 1.0 − A Lower Gate Sink − 2.0 − A TG Falling to BG Rising Delay VCC = 12 V, TG < 2.0 V, BG > 2.0 V − 40 90 ns BG Falling to TG Rising Delay VCC = 12 V, BG < 2.0 V, TG > 2.0 V − 35 90 ns Enable Threshold 0.3 0.4 0.5 V Over−Current Protection OCSET Current Source Sourced from BG pin, before SS − 10 − mA OC Switch−Over Threshold − 700 − mV Fixed OC Threshold − −375 − mV |
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