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NCP1239DD65R2G Datasheet(PDF) 6 Page - ON Semiconductor |
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NCP1239DD65R2G Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 25 page NCP1239 www.onsemi.com 6 Table 4. ELECTRICAL CHARACTERISTICS (continued) (For typical values TJ = 25°C, for min/max Values TJ = −40°C to +125°C, VHV = 125 V, VCC = 11 V unless otherwise noted) Parameter Unit Max Typ Min Symbol Test Conditions INTERNAL OSCILLATOR Oscillation Frequency (65-kHz Version) fOSC 60 65 70 kHz Oscillation Frequency (100-kHz Version) fOSC 92 100 108 kHz Maximum Duty-Cycle DMAX 76 80 84 % Frequency Jittering In Percentage of fOSC – Jitter is Kept even in Foldback Mode fJITTER − ±5 − % Swing Frequency fSWING − 240 − Hz FEEDBACK SECTION Equivalent AC Resistor from FB to GND (Note 1) REQ − 25 − k W Internal Pull-Up Voltage on FB Pin FB open VFB(ref) 4.1 4.3 − V VFB to Current Setpoint Division Ratio KFB − 4 − Feedback Voltage below which the Peak Current is Frozen VFREEZE − 1.0 − V FREQUENCY FOLDBACK Frequency Foldback Level on FB Pin ≈ 59% of Maximum Peak Current VFOLD − 1.90 − V Transition Frequency below which Skip-Cycle Occurs VFB =VSKIP + 0.5 V fTRANS 22 26 30 kHz End of Frequency Foldback Feedback Level fSW = fMIN VFOLD(end) − 1.50 − V Skip-Cycle Level Voltage on FB Pin VSKIP − 0.80 − V Hysteresis on the Skip Comparator (Note 1) VSKIP(hyst) − 30 − mV INTERNAL RAMP COMPENSATION Compensation Ramp Slope FSW = 65 kHz, RUP = 30 kW FSW = 100 kHz, RUP = 30 kW S65 S100 − − −29 −45 − − mV/ ms OVERPOWER COMPENSATION (OPP) VHV to IOPP Conversion Ratio KOPP − 0.54 − mA/V Current Flowing Out of CS Pin (Note 2) VHV = 125 V VHV = 162 V VHV = 328 V VHV = 365 V IOPP(125) IOPP(162) IOPP(328) IOPP(365) − − − 105 0 20 110 130 − − − 150 mA Percentage of Applied OPP Current VFB < VFOLD IOPP1 − 0 − % Percentage of Applied OPP Current VFB > VFOLD + 0.7 V (VOPP) IOPP2 − 100 − % Clamped OPP Current VHV > 365 V IOPP3 105 130 150 mA Watchdog Timer for DC Operation tWD(OPP) − 32 − ms BROWN-OUT (BO) Brown-Out Thresholds (A, B, C & E versions) VHV Increasing VBO(on) 100 110 120 V Brown-Out Thresholds (A, B, C & E versions) VHV Decreasing VBO(off) 93 101 109 V Brown-Out Thresholds (D version only) VHV Increasing VBO(on) 92 101 110 V Brown-Out Thresholds (D version only) VHV Decreasing VBO(off) 87 95 103 V Timer Duration VHV Decreasing tBO 54 68 82 ms 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. 1. Guaranteed by design 2. CS pin source current is a sum of IBIAS and IOPP, thus at VHV = 125 V is observed the IBIAS only, because IOPC is switched off. |
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