E-L4973V5.1 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
E-L4973V5.1 Datasheet PDF : 27 Pages
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Typical characteristics
L4973
Figure 35. Load transient
Figure 36. Line transient
IO
(A)
3
2
1
T
2
200µs/DIV
1
T
D97IN649
VCC = 35V
fsw = 100KHz
VO
(mV)
100
0
-100
VCC
(V)
30
20
10
1
2
1ms/DIV
D97IN650
IO = 1A
fsw = 100KHz
VO
(mV)
100
0
-100
Figure 37. Source current rise and fall
time, pin 2, 3 (see Figure 4)
Figure 38. Soft start capacitor selection
vs. inductor and VCC max (ref.
AN938)
Lomax
(µH)
300
250
200
150
100
50
fsw = 100KHz
D97IN653
Css=1µF
Css=820nF
Css=680nF
Css=470nF
Css=220nF
Css=100nF
0
25 30 35 40 45 50 Vi(V)
18/27
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