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KA7577D Arkusz danych(PDF) 4 Page - Fairchild Semiconductor |
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KA7577D Arkusz danych(HTML) 4 Page - Fairchild Semiconductor |
4 / 10 page KA7577 4 Electrical Characteristics (VCC=18V, TA=25°C, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit OVER VOLTAGE PROTECTION SECTION OVP Terminal Threshold Voltage VTH(OVP) -1.0 1.4 1.8 V OVP Terminal Input Current II(OVP) -- 1.2 3.6 µA OVP Cancellation Voltage VCC(OVPC) -7.6 8.6 - V Difference Voltage Between Operating Stop and OVP Cancellation ∆VCC(OVP) - 0.65 1.3 - V TIMER SECTION Timer Frequency f(TIMER) - 0.27 0.4 0.6 Hz Timer Charge Current ICHG(TIMER) TA = -5 °C TA = 25 °C TA = 85 °C -193 -178 -147 -138 -127 -105 -102 -94 -78 µA Off Time/On Time Ratio K - 7.0 8.7 11.0 - CURRENT LINITTING SECTION CLM( - ) Terminal Threshold Voltage VTH(CLM - ) TA = - 5 to + 85 °C -220 -200 -180 mV CLM( - ) Terminal Source Current ISOURCE(CLM - ) V(CLM - ) -170 -125 -90 µA CLM( - ) Terminal Duty Time tD(CLM - ) 170 nS CLM(+ ) Terminal Threshold Voltage VTH(CLM +) TA = - 5 to + 85 °C 180 200 220 mV CLM(+ ) Terminal Source Current ISOURCE(CLM +) V(CLM +) = 0V -270 -205 -140 µA CLM(+ ) Terminal Duty Time tD(CLM +) - - - 130 nS OSCILLATOR SECTION Operation Frequency f RT-ON = 17K RT-OFF = 20K CF = 220pF TA = - 5 to + 85 °C 170 188 208 KHz Maximum On Duty DON(MAX) TA = - 5 to + 85 °C47 50 53 % Upper Limit Voltage of Oscillation Waveform VL(OSC) - 3.97 4.37 4.77 V Lower Limit Voltage of Oscillation Waveform VL(OSC) - 1.76 1.96 2.16 V Voltage Difference Between Upper Limit and Lower Limit ∆V(OSC) - 2.11 2.41 2.71 V VF SECTION OSC. Frequency at CLM Operating fVF VVF = 5V, RT-ON = 17K RT-OFF = 20K CF = 220pF 170 188 207 KHz VF = 2V, RT-ON = 17V RT-OFF = 20K CF = 220pF 108 124 143 KHz |
Podobny numer części - KA7577D |
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Podobny opis - KA7577D |
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