전자부품 데이터시트 검색엔진 |
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CS2841B 데이터시트(PDF) 7 Page - ON Semiconductor |
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CS2841B 데이터시트(HTML) 7 Page - ON Semiconductor |
7 / 10 page CS2841B http://onsemi.com 7 tc + RTCT ln VREF * Vlower VREF * Vupper td + RTCT ln VREF * IdRT * Vupper VREF * IdRT * Vlower Substituting in typical values for the parameters in the above formulas: VREF + 5.0 V Vupper + 2.7 V Vlower + 1.0 V Id + 8.3 mA tc [ 0.5534RTCT td + RTCT ln 2.3 * 0.0083RT 4.0 * 0.0083RT The frequency and maximum duty cycle can be determined from the Typical Performance Characteristic graphs. Grounding High peak currents associated with capacitive loads necessitate careful grounding techniques. Timing and bypass capacitors should be connected close to GND pin in a single point ground. The transistor and 5.0 k W potentiometer are used to sample the oscillator waveform and apply an adjustable ramp to Sense. C8 VC C10 0.1 mF 10 mF 0.1 mF C9 C13 4.7 nF OSC VREF VCC PVCC VOUT SENSE COMP VFB GND PGND R8 4.99 k 1.0 % C14 47 pF R7 22.1 k C11 0.33 mF R6 1.0 k R4 10 C12 10 nF R3 4.99 k 1.0 % MTDISN06VTL4 R9 0.2 1.0 % Q2 VPR GND Q1 2n4401 DZ1 13 V 1N5243B R1 4.7 k C1 68 mF 68 mF C2 C3 4.7 pF 100 V MURS120T3 D1 R2 47 VCC VCC−GND 0.1 mF C7 1000 mF C5 1000 mF C6 C4 0.1 mF D2 MBR360 L1 2.2 mH 9T VCC = 5.0 V @ 750 mA R5 2.0 k CS2841B 20T Figure 8. Flyback Application |
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유사한 설명 - CS2841B |
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