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TOP242 Datasheet(PDF) 18 Page - Power Integrations, Inc.

Part # TOP242
Description  Family Extended Power, Design Flexible,Integrated Off-line Switcher
PDF  48 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP242 Datasheet(HTML) 18 Page - Power Integrations, Inc.

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TOP242-249
18
E
7/01
August 8, 2000
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
Figure 28. Line-Sensing and Externally Set Current Limit.
PI-2640-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
ON/OFF
47 k
Ω
QR can be an optocoupler
output or can be replaced by
a manual switch.
300 k
Ω
Q
R
Figure 29. Active-on Remote ON/OFF.
X
PI-2629-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
R
IL
R
LS
12 k
Ω
2 M
Ω
VUV = IUV x RLS
VOV = IOV x RLS
For RLS = 2 M
Ω
DCMAX@100 VDC = 78%
DCMAX@375 VDC = 38%
For RIL = 12 k
Ω
ILIMIT = 69%
See fig. 55 for other
resistor values (RIL)
to select different ILIMIT
values
VUV = 100 VDC
VOV = 450 VDC



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