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L7986TR 데이터시트(PDF) 37 Page - STMicroelectronics

부품명 L7986TR
상세설명  3 A step-down switching regulator
PDF  43 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L7986TR 데이터시트(HTML) 37 Page - STMicroelectronics

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DocID022450 Rev 6
37/43
L7986
Application ideas
43
As in the positive buck-boost, the maximum output current according to application
conditions is shown in Figure 37. The dashed line considers a more accurate estimation of
the duty cycles given by Equation 44, where power losses across diodes and the internal
power MOSFET are taken into account.
Equation 44
Figure 37. Maximum output current according to switch max. peak current (3.0 A):
VO = - 5 V
D
VOUT VD
–
V
– IN VSW VOUT VD
–
+
–
-----------------------------------------------------------------
=



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