top250p Power Integrations, Inc., top250p Datasheet - Page 42

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

42
TOP242-250
O
11/05
Figure 56a. Current Limit vs. MULTI-FUNCTION Pin Current (TOP246P/G only).
Figure 56b. Current Limit vs. External Current Limit Resistance (TOP246P/G only).
Figure 56c. External Current Limit vs. External Current Limit Resistance at 0 °C, 25 °C and 100 °C Junction
1.25
1.20
1.15
1.10
1.05
1.00
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
.95
.90
.85
.80
.75
.70
-250
0
0
Measured at 25 °C.
Temperature (TOP246P/G only).
5K
5K
-200
Typical
10K
10K
External Current Limit Resistor R
External Current Limit Resistor R
100 °C
15K
15K
-150
20K
0 °C
20K
I
Refer to MULTIFUNCTION (M) Pin
Operation section
M
(µA)
25K
25K
-100
25 °C
30K
30K
IL
IL
(Ω)
(Ω)
35K
35K
-50
Scaling Factor:
TOP246P/G: 1.35
Scaling Factor:
TOP246P/G: 1.35
40K
40K
PI-3724-110405
PI-3725-110405
45K
45K
0
200
180
160
140
120
100
80
60
40
200
180
160
140
120
100
80
60
40