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Part Name
Description
L4976 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
L4976
1A step down switching regulator
STMicroelectronics
L4976 Datasheet PDF : 17 Pages
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L4976
Typical charcteristics
Figure 20. Power dissipation vs. V
CC
Pdiss
(mW)
800
D97IN743
V
O
=5.1V
fsw=100KHz
Figure 21. Load transient
600
I
O
=1.5A
I
O
=1A
400
I
O
=0.5A
200
0
0
10 20 30 40 50 V
CC
(V)
Figure 22. Line transient
Figure 23. Open loop frequency and
phase of error amplifier
V
CC
(V)
30
20
10
1
2
1ms/DIV
D97IN786
GAIN
(dB)
D97IN787
Phase
I
O
= 1A
f
sw
= 100KHz
50
GAIN
0
0
V
O
-50
45
(mV)
100
-100
90
0
-100
-150
Phase
135
-200
10 10
2
10
3
10
4
10
5
10
6
10
7
10
8
f(Hz)
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