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UC284XBD Fiches technique(PDF) 9 Page - ON Semiconductor |
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UC284XBD Fiches technique(HTML) 9 Page - ON Semiconductor |
9 / 20 page UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV http://onsemi.com 9 + - Reference Regulator VCC UVLO + - Vref UVLO 3.6V 36V S R Q Internal Bias + 1.0mA Oscillator 2.5V R R R 2R Error Amplifier Voltage Feedback Input Output/ Compensation Current Sense Comparator 1.0V VCC 7(12) Gnd 5(9) VC 7(11) Output 6(10) Power Ground 5(8) Current Sense Input 3(5) RS Q1 VCC Vin 1(1) 2(3) 4(7) 8(14) RT CT Vref = Sink Only Positive True Logic Pin numbers adjacent to terminals are for the 8-pin dual-in-line package. Pin numbers in parenthesis are for the D suffix SO-14 package. Figure 18. Representative Block Diagram Figure 19. Timing Diagram Large RT/Small CT Small RT/Large CT PWM Latch (See Text) Capacitor CT Latch Set" Input Output/ Compensation Current Sense Input Latch Reset" Input Output |
Numéro de pièce similaire - UC284XBD |
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Description similaire - UC284XBD |
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