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LED2001PHR Fiches technique(PDF) 30 Page - STMicroelectronics

No de pièce LED2001PHR
Description  4 A monolithic step-down current source with synchronous rectification
PDF  42 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LED2001PHR Fiches technique(HTML) 30 Page - STMicroelectronics

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Application information
LED2001
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DocID024346 Rev 1
of the minimum conduction time of the power element. If the hiccup current level (6.2 A
typical) is triggered, the switching activity is prevented for 12 cycles.
Figure 18 shows the operation of the constant current protection when a short-circuit is
applied at the output at the maximum input voltage.
Figure 18. Constant current protection triggering Hiccup mode
During pulse skipping, high side OFF, low side keeps ON till 26clks finish (13clks for
LED2001) or Ipk decreases to be zero value.
7.5
Application circuit
Figure 19. Demonstration board application circuit



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