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A6986F Datasheet(PDF) 57 Page - STMicroelectronics

No. de pieza A6986F
Descripción Electrónicos  38 V 1.5 A synchronous step-down switching regulator
PDF  72 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6986F Datasheet(HTML) 57 Page - STMicroelectronics

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A6986F
Application board
72
Table 19. A6986F adj. demonstration board BOM
For Table 17 Bode’s plot please refer to Section 6.4 on page 41.
Figure 46 and Figure 47 show the magnitude and phase margin Bode’s plots related to
Table 18.
The small signal dynamic performance in this configuration is:
Equation 55
Figure 46. Magnitude Bode’s plot
Reference
Part number
Description
Manufacturer
R7
200 k
 - 1% - 0603
C7
3.3 pF - 50 V - 0603
R9
33 k
 - 1% - 0603
R8
180 k
 - 1% - 0603
C8
62 pF - 50 V - 0603
C4
2.2 pF - 50 V - 0603
J3
OPEN
Switchover enabled
L1
XAL4040-103MEC
10
HCoilcraft
U1
A6986F
External divider
STM
BW
57kHz
=
phase margin
70
0
=
0.1
1
10
100
110
3
110
4
110
5
110
6
110
7
30
17
4
9
22
35
48
61
74
87
100
EXTERNAL LOOP MODULE
F[H ]



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