lnk500 Power Integrations, Inc., lnk500 Datasheet - Page 14

• Manufacturer Part Number: lnk500
• Description: Energy Ef?cient, Cv Or Cv/cc Switcher For Very Low Cost Adapters And Chargers
• Manufacturer: Power Integrations, Inc.

Figure 12. LinkSwitch General Test Circuit.
14
Figure 13. I
Figure 15. CONTROL Pin I-V Characteristic.
LNK500
D
2/05
1.6
1.2
0.8
0.4
120
100
2
0
80
60
40
20
0
0
0.0
V
C
= 5.15 V
C
2.0
vs. DRAIN Voltage.
CONTROL Pin Voltage (V)
20
DRAIN Voltage (V)
4.0
40
40 V
6.0
S1
8.0
60
10.0 12.0 14.0
80
40 V
10 kΩ
750 Ω
100
0.22 µF
S2
C1
Figure 14. Duty Cycle Measurement.
Figure 16. Duty Cycle vs. CONTROL Pin Current.
90
80
70
60
50
40
30
20
10
0
2.15
LinkSwitch
CONTROL Pin Current (mA)
C
D
S
2.25
S
S
S
S
2.35
2.45
2.55
PI-2894-031004
2.65