MC34067 Datasheet, PDF (5/16 Pages) ON Semiconductor – HIGH PERFORMANCE ZERO VOLTAGE SWITCH RESONANT MODE CONTROLLERS

0
–10
– 20
– 30
– 40
– 50
0
MC34067 MC33067
Figure 7. Reference Voltage Change
versus Source Current
TA = – 40°C
TA = – 20°C
TA = –125°C
VCC = 12 V
20
40
60
80
100
Iref, REFERENCE SOURCE CURRENT (mA)
Figure 8. Drive Output Saturation Voltage
versus Load Current
0
–1.0
VCC
Source Saturation
(Load to Ground)
VCC = 12 V
80 µs Pulsed Load
– 2.0
TA = 25°C
120 Hz Rate
– 3.0
TA = – 40°C
3.0
2.0
TA = – 40°C
TA = 25°C
1.0
Source Saturation
Gnd
0
(Load to VCC)
0
0.2
0.4
0.6
0.8
1.0
IO, OUTPUT LOAD CURRENT (A)
Figure 9. Drive Output Waveform
CL = 1.0 nF
90%
TA = 25 °C
10%
20 ns/DIV
Figure 10. Soft–Start Saturation Voltage
versus Capacitor Discharge Current
3.2
2.4
1.6
0.8
VCC = 12 V
Pin 10 = Vref
TA = 25 °C
0
0
2.0
4.0
6.0
8.0
10
Idchg, CAPACITOR DISCHARGE CURRENT (mA)
Figure 11. Operating Frequency
versus Supply Current
2000
VCC = 12 V
1600
CL = 1.0 nF
TA = 25 °C
1200
800
400
0
30
40
50
60
70
80
90
ICC, INPUT SUPPLY CURRENT (mA)
Figure 12. Supply Current versus Supply Voltage
24
TA = 25 °C
20
16
Enable/UVLO
Adjust Pin
Open
12
8.0
Enable/UVLO
Adjust Pin
4.0
to VCC
00
4.0
8.0
12
16
20
VCC, SUPPLY VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
5