NCP1608
TYPICAL CHARACTERISTICS
16
220
VFB = 2.6 V
215
14
210
12
205
200
10
195
8
6
−50 −25 0
25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Error Amplifier Sink Current vs.
Junction Temperature
190
VFB = 0.5 V
185
180
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 10. Error Amplifier Source Current vs.
Junction Temperature
125
120
115
110
105
100
95
90
85
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 11. Error Amplifier Transconductance
vs. Junction Temperature
200
200
180
180
Phase
160
160
140
140
120 Transconductance
120
100
100
80 RControl = 100 kW
60 CControl = 2 pF
40
VFB = 2.5 Vdc, 1 Vac
VCC = 12 V
20 TA = 25°C
0
0.01
0.1
1
80
60
40
20
0
10
100 1000
f, FREQUENCY (kHz)
Figure 12. Error Amplifier Transconductance
and Phase vs. Frequency
1.0
278
0.9
276
0.8
274
0.7
272
0.6
270
0.5
268
0.4
0.3
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 13. Minimum Control Voltage to Generate
Drive Pulses vs. Junction Temperature
266
264
−50 −25 0
25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 14. On Time Capacitor Charge Current
vs. Junction Temperature
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