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Part Name
Description
E-L4973D3.3-TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
View to exact match
E-L4973D3.3-TR
3.5A step down switching regulator
STMicroelectronics
E-L4973D3.3-TR Datasheet PDF : 27 Pages
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L4973
Typical characteristics
Figure 39. Soft start capacitor selection Figure 40. Open loop frequency and
vs. inductor and V
CC
max (ref.
AN938)
phase of error amplifier
Lomax
(
ยต
H)
150
f
sw
= 200KHz
D97IN654
100
50
Css=33nF
Css=22nF
0
15 20 25 30 35 40 45 50 Vi(V)
GAIN
(dB)
D97IN663
Phase
50
GAIN
0
0
-50
45
-100
-150
Phase
90
135
-200
10 10
2
10
3
10
4
10
5
10
6
10
7
10
8
f(Hz)
19/27
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