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MC33065DW Datasheet(PDF) 8 Page - ON Semiconductor |
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MC33065DW Datasheet(HTML) 8 Page - ON Semiconductor |
8 / 15 page MC34065 MC33065 8 MOTOROLA ANALOG IC DEVICE DATA Figure 15. Representative Block Diagram + – – + – + + – + – – + – + 12 13 14 5 4 2 3 1 15 7 6 10 11 Vref Sync Input RT CT Voltage Feedback 1 Compensation 1 Drive Enable Voltage Feedback 2 Compensation 2 Vin = 15 V VCC 16 Q2 RS Current Sense 2 Drive Output 2 Current Sense 1 Drive Output 1 RS Q1 Gnd 8 Drive Gnd 9 = Sink Only Positive True Logic 0.5 V R S Q R R PWM Latch 2 S R Q Current Sense Comparator 2 2R Error Amp 2 Error Amp 1 250 µA 1.0 mA 0.5 V R 1.0 mA Oscillator 3.6 V + – 20 k Internal Bias Reference Regulator R R 2.5 V PWM Latch 1 VCC UVLO + – Current Sense Comparator 1 Vref UVLO 2R 14 V 17 V Latch 2 “Reset” Input Figure 16. Timing Diagram Sync Input Capacitor CT Latch 1 “Set” Input Compensation 1 Current Sense 1 Latch 1 “Reset” Input Drive Output 1 Drive Output 2 Enable Latch 2 “Set” Input Compensation 2 Current Sense 2 Drive Output 2 |
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