MC34063A_02 Datasheet, PDF (4/10 Pages) Analog Intergrations Corporation – Industrial Standard, Universal DC/DC Converter

MC34063A
n TYPICAL PERFORMANCE CHARACTERISTICS
2
VCC=5V
V_IPK=VCC
PIN 5=GND
1.6
ON TIME
1.2
0.8
OFF TIME
0.4
C_T=1nF
V_IPK= VCC
PIN 2=GND
0.1
1
10
100
C_T, Oscillator Timing Capacitor (nF)
Fig. 1 Output Switch ON-OFF Time vs. Oscillator
Timing Capacitor
0
0
5
10
15
20
25
30
VCC, Supply Voltage (V)
Fig. 2 Standby Supply Current vs. Supply Voltage
1.3
VCC = 5V
1.28 C_T=1nF
Pin 2= GND
1.26
1.24
1.22
1.2
0
10
20
30
40
50
60
70
80
Temperature (°C)
Fig. 3 V_FB, Threshold Voltage vs. Temperature
350
340 _{VCC = 5V}
330 _CT=1nF
320 ^{Pin 5= GND}
310
300
290
280
270
260
250
0
10
Fig. 4
20
30
40
50
60
70
80
Temperature (°C)
IPK Threshold Voltage vs. Temperature
1.8
1.7
VCC = 5V
Pin 1, 7, 8=VCC
Pin 3, 5= GND
1.6
1.5
1.4
1.3
1.2 ₀
0.5
1
1.5
I_E, Emitter Current (A)
Fig. 5 Emmiter-Follower Configuration Output
Switch Saturation Voltage vs. Emmiter Current
1.4
VCC = 5V
1.2 _{Pin 1, 7, 8=VCC}
Pin 3, 5= GND
1.0
0.8
0.6
Darlington Connection
0.4
0.2
Forced Beta = 20
0
0
0.5
1
1.5
I_C, Collector Current (A)
Fig. 6 Common-Emitter Configuration Output
Switch Saturation Voltage vs. Collector Current
4