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LM3557 Fiches technique(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM3557
Description  Step-Up Converter for White LED Applications
Download  11 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3557 Fiches technique(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagram
Top View
20131602
8-Lead Thin Leadless Leadframe Package
See NS Package Number SDA08A
Ordering Information
Order Number
Package
Marking
Supplied As
LM3557SD-2
L147B
1k Units, Tape and Reel
LM3557SDX-2
L147B
4.5k Units, Tape and Reel
Pin Description
Pin #
Name
Description
1
Sw1
Drain Connection of the Internal Power Field Effect Transistor (FET) Switch (Figure 2: N1)
2V
IN
Input Voltage Connection
3
NC
No Connection
4
En
Device Enable Connection
5
Ovp
Over-Voltage Protection Input Connection
6
Fb
Feedback Voltage Connection
7
Sw2
Drain Connection of an Internal Field Effect Transistor (FET) Switch (Figure 2: N2)
8
Gnd
Ground Connection
DAP
DAP
Die Attach Pad (DAP), must be soldered to the printed circuit board’s ground plane for enhanced thermal
dissipation
www.national.com
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