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L5986 数据表(PDF) 25 Page - STMicroelectronics

部件名 L5986
功能描述  2.5 A step-down switching regulator
PDF  39 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5986 数据表(HTML) 25 Page - STMicroelectronics

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L5986 - L5986A
Application information
25/39
Equation 25
For example with VOUT = 3.3 V, VIN = 12 V, IO = 2.5 A, L = 12 μH, COUT = 330 μF,
ESR = 35 m
Ω, the type II compensation network is:
In Figure 14 is shown the module and phase of the open loop gain. The bandwidth is about
32 kHz and the phase margin is 45°.
C
5
C
4
2
π R
4
C
4
4BW
⋅
1
–
⋅⋅⋅
--------------------------------------------------------------
=
R
1
1.5k
Ω
=
R
2
330
Ω
=
R
4
10k
Ω
=
C
4
47nF
=
C
5
82pF
=
,,
,
,



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