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NCP1027P065G Datasheet(PDF) 5 Page - ON Semiconductor |
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NCP1027P065G Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 30 page NCP1027 www.onsemi.com 5 ELECTRICAL CHARACTERISTICS (continued) (For typical values TJ = 25°C, for min/max values TJ = 0°C to +125°C, Max TJ = 150°C, VCC = 8.0 V, unless otherwise noted.) Characteristic Pin Symbol Min Typ Max Unit CURRENT COMPARATOR Maximum Internal Current Setpoint, Pin 4 Open, TJ = 25°C, FSW = 65 kHz (Note 3) − Ipeak_27_CS_ 65 k 720 800 880 mA Final Switch Current with a Primary Slope of 200 mA/ ms, FSW = 65 kHz (Note 4) − Ipeak_27_SW_ 65 k − 820 − mA Maximum Internal Current Setpoint, Pin 4 Open, TJ = 25°C, FSW = 100 kHz (Note 3) − Ipeak_27_CS_ 100 k 720 800 880 mA Final Switch Current with a Primary Slope of 200 mA/ ms, FSW = 100 kHz (Note 4) − Ipeak_27_SW_ 100 k − 820 − mA Setpoint Decrease for a Pin 7 Injected Current of 40 mA, TJ = 25°C 7 IOPP − 23 − % Voltage Level in Pin 7 at which OPP Starts to Operate 7 IOPPtripV − 1.5 − V Soft−Start Duration − TSS − 1.0 − ms Propagation Delay from Current Detection to Drain OFF State − Tprop − 100 − ns Leading Edge Blanking Duration − TLEB − 200 − ns INTERNAL OSCILLATOR Oscillation Frequency (Note 5) 65 kHz Version, TJ = 25°C − fOSC 58.5 65 71.5 kHz Oscillation Frequency (Note 5) 100 kHz Version, TJ = 25°C − fOSC 90 100 110 kHz Frequency Jittering in Percentage of fOSC − fJitter − "6.0 − % Jittering Swing Frequency − fswing − 300 − Hz Maximum Duty Cycle − Dmax 74 80 87 % FEEDBACK SECTION Internal Pullup Resistor 4 Rupp − 16 − k W Ramp Compensation Level on Pin 1 – Rramp = 100 k W 2 Rlevel − 2.75 − V SKIP CYCLE GENERATION Internal Skip Mode Level, in Percentage of Maximum Peak Current − Iskip − 25 − % PROTECTIONS Brown−Out Level 3 VBO 510 570 620 mV Brown−Out Hysteresis Current, TJ = 25°C (Note 3) 3 IBOhyste 10 11.5 13 mA Brown−Out Hysteresis Current, TJ = 0°C to 125°C 3 IBOhyste − 10 − mA Fault Validation further to Error Flag Assertion − TimerON 40 55 − ms OFF Phase in Fault Mode − TimerOFF − 440 − ms Latching Voltage on Brown−Out Pin 3 Vlatch 3.15 3.5 3.85 V Latch Input Integrating Filter Time Constant 3 TdelBOL − 20 − ms OVP Integrating Filter Time Constant − TdelOVP − 50 − ms VCC Current at which the Switcher Stops Pulsing 1 IOVP 6.0 8.5 11 mA TEMPERATURE MANAGEMENT Temperature Shutdown − TSD 160 − − °C Hysteresis in Shutdown − − − 40 − °C Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 3. See characterization curves for full temperature span evolution. 4. The final switch current is: Ipeak_2X_CS + Tprop x Vin / Lp, with Vin the input voltage and Lp the primary inductor in a flyback. 5. Oscillator frequency is measured with disabled jittering. |
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