NCP3066 ON Semiconductor, NCP3066 Datasheet - Page 5

• Manufacturer Part Number: NCP3066
• Description: Up to 1.5A Constant Current Switching Regulator
• Manufacturer: ON Semiconductor

0.240
0.238
0.236
0.234
0.232
0.230
350
300
250
200
150
100
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
50
0
−40 −20
−40 −20
0
I
CE
Figure 7. Voltage Drop in Emitter Follower
I
CE
2
= 0.5 A
= 1.25 A
Figure 5. Oscillator Frequency vs.
T
T
4
J
Figure 9. V
J
I
0
, JUNCTION TEMPERATURE (°C)
0
CE
, JUNCTION TEMPERATURE (°C)
Ct, CAPACITANCE (nF)
= 1 A
I
6
CE
Timing Capacitor
I
20
CE
20
Configuration
= 0.25 A
= 0.75 A
8
40
th
40
vs. Temperature
10
60
60
12
80
80
14
100
100
16
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120
120 140
18
140
20
5
0.200
0.195
0.190
0.185
0.180
0.175
0.170
150
145
140
135
130
125
120
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
−40 −20
−40 −20
0
Figure 8. Common Emitter Configuration Output
Darlington Switch Voltage Drop vs. Temperature
I
CE
Figure 10. Current Limit Sense Voltage vs.
Figure 6. Oscillator Frequency vs. Supply
I
CE
= 0.5 A
5
= 1.25 A
T
T
J
J
0
0
, JUNCTION TEMPERATURE (°C)
, JUNCTION TEMPERATURE (°C)
10
V
IN
20
20
, INPUT VOLTAGE (V)
15
I
Temperature
CE
I
CE
Voltage
40
40
= 1 A
= 0.25 A
20
60
60
I
CE
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= 0.75 A
25
80
80
30
100 120
100
120
35
140
140
40