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TDA8385 데이터시트(PDF) 3 Page - NXP Semiconductors |
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3 / 21 page March 1994 4 Philips Semiconductors Preliminary specification Control circuit for a Self-Oscillating Power Supply (SOPS) TDA8385 handbook, full pagewidth stand-by voltage input over-voltage protection latch 22 24 11 MCD418 100 µA slow discharge 21 (17) (28) VIII Q R S FF 23 over voltage Q 115 mV 2.5 V OVER-VOLTAGE PROTECTION DELAY 12 115 mV 100 mV SAWTOOTH GENERATOR DEM 12 15 5 6 8 Q 13 R S Vr Vsb Vsim 8 PWM IV 14 16 demagnetization LED CONTROL demagnetization (28) 18 V 9 I12 12 0.2 I I sim I peak 25 2.5 V 2 V STAND-BY IX 2.5 V latch Q (23) 17 OUTPUT STAGE 15 LED LED DRIVER VI 10 TDA8385 2 LED driver output delay setting demagnetization input peak-current setting input current simulation input 26 comparator II V c 10 FF Fig.2 Block diagram; part B (continued from Fig.1; part A). |
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