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MC34063ABN Datasheet(PDF) 6 Page - STMicroelectronics |
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MC34063ABN Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 23 page  Electrical characteristics MC34063AB - MC34063AC - MC34063EB - MC34063EC 6/23 4 Electrical characteristics (Refer to the test circuits, VCC = 5 V, TA = TLOW to THIGH, unless otherwise specified, see Note 2) Table 5. Oscillator Symbol Parameter Test conditions Min. Typ. Max. Unit fOSC Frequency VPIN5 = 0V, CT = 1 nF, TA = 25°C 24 33 42 kHz ICHG Charge current VCC = 5 to 40V, TA = 25°C 24 33 42 µA IDISCHG Discharge current VCC = 5 to 40V, TA = 25°C 140 200 260 µA IDISCHG/ICHG Discharge to charge current ratio PIN 7 = VCC, TA = 25°C 5.2 6.2 7.5 µA VIPK(sense) Current limit sense voltage ICHG = IDISCHG, TA = 25°C 250 300 350 mV Table 6. Output switch Symbol Parameter Test conditions Min. Typ. Max. Unit VCE(sat) Saturation voltage, darlington connection ISW = 1 A, PIN 7, 8 connected 1 1.3 V VCE(sat) Saturation voltage ISW = 1 A, RPIN8 = 82 Ω to VCC Forced β ~ 20 0.45 0.7 V hFE DC current gain ISW = 1 A,VCE = 5 V, TA = 25°C 50 120 IC(off) Collector off-state current VCE = 40 V 0.01 100 µA Table 7. Comparator Symbol Parameter Test conditions Min. Typ. Max. Unit VTH Threshold voltage TA = 25°C 1.225 1.25 1.275 V TA = TLOW to THIGH 1.21 1.29 Regline Threshold voltage line regulation VCC = 3 to 40 V 1 5 mV IIB Input bias current VIN = 0 V -5 -400 nA |
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