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0
-10
- 20
- 30
- 40
- 50
0
Figure 8. Reference Output Voltage Change
90%
10%
2000
1600
1200
800
400
0
30
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Elcodis.com
electronic components distributor
T
= - 20°C
A
T
= -125°C
A
V
= 12 V
CC
20
40
60
I
, REFERENCE SOURCE CURRENT (mA)
ref
versus Source Current
20 ns/DIV
Figure 10. Drive Output Waveform
V
= 12 V
CC
C
= 1.0 nF
L
= 25 °C
T
A
40
50
60
70
I
, SUPPLY CURRENT (mA)
CC
Figure 12. Operating Frequency
versus Supply Current
MC34067, MC33067
0
T
= - 40°C
A
-1.0
- 2.0
- 3.0
3.0
2.0
1.0
0
80
100
0
3.2
C
= 1.0 nF
L
= 25 °C
T
A
2.4
1.6
0.8
0
0
24
T
A
20
16
12
8.0
4.0
0
80
90
0
Figure 13. Supply Current versus Supply Voltage
http://onsemi.com
6
Source Saturation
V
CC
(Load to Ground)
T
= 25°C
A
T
= - 40°C
A
T
= - 40°C
A
T
= 25°C
A
Source Saturation
(Load to V
)
CC
0.2
0.4
0.6
I
, OUTPUT LOAD CURRENT (A)
O
Figure 9. Drive Output Saturation Voltage
versus Load Current
2.0
4.0
6.0
I
, CAPACITOR DISCHARGE CURRENT (mA)
dchg
Figure 11. Soft−Start Saturation Voltage
versus Capacitor Discharge Current
= 25 °C
Enable/UVLO
Adjust Pin
Open
(Solid Line)
Enable/UVLO
Adjust Pin
to V
CC
(Dashed Line)
4.0
8.0
12
V
, SUPPLY VOLTAGE (V)
CC
V
= 12 V
CC
80 ms Pulsed Load
120 Hz Rate
GND
0.8
1.0
V
= 12 V
CC
Pin 10 = V
ref
= 25 °C
T
A
8.0
10
16
20
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