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L7987 Fiches technique(PDF) 13 Page - STMicroelectronics

No de pièce L7987
Description  Adjustable current limitation
PDF  37 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7987 Fiches technique(HTML) 13 Page - STMicroelectronics

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DocID025589 Rev 3
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L7987
Functional description
37
In case two or more (up to five) L7987 SYNCH pins are tied together, the L7987 IC with
higher programmed switching frequency is typically the master device; however, the
SYNCH circuit is also able to synchronize with a slightly lower external frequency, so the
frequency pre-adjustment with the same resistor on the FSW pin, as suggested above, is
required for a proper operation.



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