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NE5562 Datasheet(PDF) 2 Page - NXP Semiconductors |
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NE5562 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 29 page Philips Semiconductors Product specification NE/SE5562 Switched-mode power supply control circuit 1994 Aug 31 2 BLOCK DIAGRAM FEEDFORWARD 1 11 EXTERNAL SYNC IN + + – + S R Q OSC LATCH OSCILLATOR 3 2 OFF ON CLOCK TIME DELAY OFF ON 1.5V REMOTE ON/OFF 6 ERROR AMP OUT 10 FEEDBACK VOLTAGE 8 EXTERNAL MOD IN 4 DUTY CYCLE CONTROL 5 CLOCK LOOP FAULT COMP 0.955V 3.80V PWM COMP ON/OFF COMP 2k OC1 0C2 0.955V SLOW START COMP OC2 NORM – + 0.528V OVERCURRENT 1 COMP OVERCURRENT 2 COMP OC CHARGE PUMPS NORM LV STOP START/ STOP LATCH R S Q 0.645V OUTPUT LATCH OC1 NORM LOW BULK BULK SENSE COMP 1:1 1:1 16 POWER SUPPLY CKTS 3.80V SHUT DOWN LATCH 3.80V OC ACCUM COMP TRIP NORM S R Q – + +V +V OC1 OC2 AUXILIARY COMP HYSTERESIS AUXILIARY COMP INPUT 12 ERROR AMP DEMAG/OV IN 18 3.80V DEMAG/OV COMP 0V NORM OUTPUT 19 OUTPUT INVERT CONTROL 15 POWR OUTPUT NOR CURRENT SENSE GND 14 20 9 0.955V 0.528V 0.645V DELAYED CLOCK S R – + – + – + + – – – – + – + – + 13 3.80V 3.80V – + – + CDELAY 1 µA 11 µA 80 µA VI VZ VS 17 Q OC1-2 LATCHES 7 SL00389 Figure 2. Block Diagram |
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