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5 page 
5 TYPICAL PERFORMANCE CHARACTERISTICS Figure 3. Timing Capacitor Waveform Figure 5. Common Emitter Configuration Output Switch Saturation Voltage vs. Collector Current Figure 4. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current Figure 6. Current Limit Sense Voltage vs. Figure 7. Standby Supply Current vs. Figure 2. Output Switch On−Off Time vs. Oscillator Timing Capacitor 1000 500 200 100 50 20 10 5.0 2.0 1.0 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 CT,OSCILLATOR TIMING CAPACITOR(nF) VCC=5.0V Pin7=VCC Pin5=GND TA=25°C ton toff 10μS / DIV VCC=5.0V Pin7=VCC Pin2=GND Pins1,5,8=Open CT=1.0μF TA=25°C 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 VCC=5.0V Pins1,7,8=Vcc Pins3,5=GND TA = 25ºC IE, EMITTER CURRENT(A) 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 VCC=5.0V Pin7=Vcc Pins 2 ,3,5=GND TA = 25ºC Darlington Connection Forcedβ = 20 IC, COLLECTOR CURRENT(A) 400 380 360 340 320 300 280 260 240 220 200 -55 -25 0 25 50 75 100 125 TA,AMBIENT TEMPERATURE(°C) Vcc=5.0V Ichg=Idischg 3.6 3.2 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0 0 5.0 10 15 20 25 30 35 40 CT=1.0nF Pin7=Vcc Pin2=GND VCC,S UPPLY VOLTAGE(V) Supply Voltage Temperature DC-TO-DC Converter Control Circuits MC34063A |
