Datenblatt-Suchmaschine für elektronische Bauteile |
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MC34063A Datenblatt(PDF) 3 Page - STMicroelectronics |
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MC34063A Datenblatt(HTML) 3 Page - STMicroelectronics |
3 / 15 page ELECTRICAL CHARACTERISTICS (Refer to the test circuits, VCC = 5V, Ta =TLOW to THIGH, unless otherwise specified, see note 2) OSCILLATOR Symbol Parameter Test Conditions Min. Typ. Max. Unit fOSC Frequency Vpin5 =0 V CT = 1 nF Ta =25 oC 243342 KHz Ichg Charge Currernt VCC = 5 to 40 V Ta =25 oC 243342 µA Idischg Discharge Current VCC = 5 to 40 V Ta =25 oC 140 200 260 µA Idis chg/Ichg Discharge to Charge Current Ratio Pin 7 = VCC Ta =25 oC 5.2 6.2 7.5 Vipk( sense) Current Limit Sense Voltage Ichg =Idischg Ta =25 oC 250 300 350 mV OUTPUT SWITCH Symbol Parameter Test Conditions Min. Typ. Max. Unit VCE(sat) Saturation Voltage, Darlington Connection ISW = 1 A Pins 1, 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 oC50 120 IC(off) Collector Off-State Current VCE = 40 V 0.01 100 µA COMPARATOR Symbol Parameter Test Conditions Min. Typ. Max. Unit Vth Threshold Voltage Ta =25 oC Ta =TLOW to THIGH 1.225 1.21 1.25 1. 275 1.29 V V Reg line Threshold Voltage Line Regulation VCC = 3 to 40 V 1 5 mV IIB Input Bias Current VIN = 0 V -5 -400 nA TOTAL DEVICE Symbol Parameter Test Conditions Min. Typ. Max. Unit ICC Supply Current VCC = 5 to 40 V CT =1 nF Pin 7 = VCC Vpin5 >Vth Pin 2 = GND Remaining pins open 2.5 4 mA NOTES: 1) Maximum package power dissipation limit must be observed. 2) TLOW =0 oC, THIGH =70 oC (AC series); TLOW = -40 oC, THIGH =85 oC (AB series). 3) If Darlington configuration is not used, care must be taken to avoid deep saturation of output switch. The resulting switch-off time may be adversely affected. In a Darlington configuration the following output driver condition is suggested: Forced β of output current switch = ICOUTPUT/(ICDRIVER - 1mA*) ≥ 10 * Current less due to a built in 1K Ω antileakage resistor. MC34063A 3/15 |
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