top250p Power Integrations, Inc., top250p Datasheet - Page 41

• Manufacturer Part Number: top250p
• Description: Extended Power, Design Flexible, Ecosmart, Integrated Off-line Switcher A
• Manufacturer: Power Integrations, Inc.

Figure 55a. Current Limit vs. MULTI-FUNCTION Pin Current (TOP245P/G only).
Figure 55b. Current Limit vs. External Current Limit Resistance (TOP245P/G only).
Figure 55c. External Current Limit vs. External Current Limit Resistance at 0 °C, 25 °C and 100 °C Junction
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
-250
1.25
1.20
1.15
1.10
1.05
1.00
0
.95
.90
.85
.80
.75
.70
Measured at 25 °C.
0
Temperature (TOP245P/G only).
5K
5K
-200
Typical
10K
10K
External Current Limit Resistor R
100 °C
15K
External Current Limit Resistor R
15K
-150
20K
0 °C
20K
I
Refer to MULTIFUNCTION (M) Pin
Operation section
M
(µA)
25K
25K
-100
25 °C
30K
IL
30K
(Ω)
IL
(Ω)
35K
-50
35K
Scaling Factor:
TOP245P/G: 1.1
Scaling Factor:
TOP245P/G: 1.1
40K
PI-3652-110405
PI-3651-110405
40K
TOP242-250
45K
0
200
180
160
140
120
100
80
60
40
200
180
160
140
120
100
80
60
40
45K
11/05
O
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