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KA7543 Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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KA7543 Datasheet(HTML) 2 Page - Fairchild Semiconductor |
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2 / 16 page  KA7543 2 Internal Block Diagram 1 2 3 4 5 6 8 9 10 11 12 13 14 Output stage Frequency divider Protection reset + - 0.7V ict 55pF 8ict sw 2V - + Limiter + - + + 4V + - 1V Q R Q S - + Dimming starter 4V 11 µA 2V + + - Gm Mirror isr 5V 20k Ω Soft starter Switch - + + + - 2V 20k Ω Mirror Dimmer idr + - - + 3V 1V 5pF Selecter No-lamp pretection 2V 3pF Abnormal protection 30k Ω + - S Q R Q 5k Ω Vr ir is-id Gm id + - 1/2 + - Current amp is 5/2 5V regulator + - 2V 5.7V bias 2V 5.7V sw 2V Vref (bandgap) Internal bias 7V 9.5V 1.8V 7V Vz Supply Reset Cs UVLO + - Oscillator OUT1 NC Vcc Cc V5 Vfb Vab 7 OUT2 NC GND Cdm Cs Vdm Vld |
Similar Part No. - KA7543 |
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Similar Description - KA7543 |
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