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NCP1239VDR2G Datasheet(PDF) 8 Page - ON Semiconductor |
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NCP1239VDR2G Datasheet(HTML) 8 Page - ON Semiconductor |
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8 / 38 page  NCP1239 http://onsemi.com 8 Figure 4. NCP1239V Internal Circuit Architecture − + 7 S R Q Q Vcc < 4V 450mV 5V 0.5V / 0.25V Rt BO REF5V SS / timer PFC_Vcc Fault detect Skip adjust Vdd / 3 to Skip 20k 0.9V Oscillator GND 32k CS Drv Vcc Vdd Regul UVLOs Latch Reset Error flag HV Dmax Vdd 2.5V Vdd 2.5V 100k Fault Vdd Vdd Soft−Start and timer management Stby_detect Error_Flag Stby OVL OVL Vcc<7V stdwn Vstop Output Buffer BO_out Jittering Modulation “Jittered” Reference Jittering Modulation CLK CLK BO_in Soft−Start Ipk limit Soft−Start Ipk limit Internal Thermal Shutdown TSD FB Divider by 2 + − Skip Skip FB Startup Phase (Vcc<VccOFF) 1mA Vcc 10k Vstop regOUT Stby_detect 25r 15r S R Q Q FB<Vpin1 => Skip high FB>1.6*Vpin1 =>Stby_detect RESET pfcOFF pfcON UVLO 14V clamp pfcON OUTon Ramp Compensation 3.2V Idmax LEB + − + 16 15 14 13 − + 3 1 S R Q Q 6 2 + 12 11 10 5 + S R Q Q 9 + − − + − + 8 4 OSC OSC |
Similar Part No. - NCP1239VDR2G |
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Similar Description - NCP1239VDR2G |
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