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A6985F Datasheet(PDF) 62 Page - STMicroelectronics

Part # A6985F
Description  38 V 500 mA synchronous step-down switching regulator
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6985F Datasheet(HTML) 62 Page - STMicroelectronics

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Application board
A6985F
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DocID027738 Rev 2
8.3
A6985F (VOUT = 6 V) evaluation board
Figure 48 and Figure 49 show the magnitude and phase margin Bode’s plots related to the
evaluation board presented in Figure 41 on page 56 with the BOM of Table 16 on page 56
and Table 19.
The small signal dynamic performance of the demonstration board is:
Equation 57
Figure 48. Magnitude Bode’s plot of A6985F (VOUT = 6 V) evaluation board
Table 19. Bill of material of A6985F (VOUT = 6 V) demonstration board
Reference
Part number
Description
Manufacturer
C4
1.2 pF - 10 V - 0603
C7
4.7 pF - 10 V - 0603
C8
27 pF - 10 V - 0603
R7
200 k
 - 1% - 0603
R8
200 k
 - 1% - 0603
R9
33 k
 - 1% - 0603
U1
A6985F
STMicroelectronics
BW
110kHz
=
phase margin
60
0
=



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