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LNK408LG Datasheet(PDF) 12 Page - Power Integrations, Inc.

Part No. LNK408LG
Description  LinkSwitch-PH LED Driver IC Family
Download  20 Pages
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Maker  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
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LNK408LG Datasheet(HTML) 12 Page - Power Integrations, Inc.

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Rev. D 08/11
12
LNK403-409/413-419
www.powerint.com
Figure 13. RD-193 7 W Layout Example, Bottom Layer.
PI-5988-060110
VR2
R4
R7
R20
C13
BR1
S
S
D7
R17
D1
R13
D6
R12
D1
D5
R9
D3
R5
D2
R6
R18
F1
B3
Output
Rectifier
Bridge Rectifier
Active Damper
MOSFET
Quick Design Checklist
Maximum Drain Voltage
Verify that the peak V
DS does not exceed 725 V under all
operating conditions including start up and fault conditions.
Maximum Drain Current
Measure the peak drain current under all operation conditions
including start up and fault conditions. Look for signs of
transformer saturation (usually occurs at highest operating
ambient temperatures). Verify that the peak current is less that
stated for the Absolute Maximum Rating in the data sheet.
Thermal Check
At maximum output power, both minimum and maximum line
voltage and ambient temperature; verify that temperature
specifications are not exceeded for the LinkSwitch-PH,
transformer, output diodes, output capacitors and drain clamp
components.


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