L5987 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L5987' PDF : 40 Pages View PDF
L5987
Application information
Figure 29. Load regulation
1.2
VCC=12V
1
VCC=5V
0.8
0.6
0.4
0.2
0
0
0.5
1
1.5
2
2.5
3
IO [A]
Figure 31. Load transient:
from 0.4 A to 3 A
Figure 30. Line regulation
1
IO=1A
0.8
IO=2A
IO=3A
0.6
0.4
0.2
0
2
4
6
8
10
12
14
16
18
VCC [V]
Figure 32. Soft-start
VOUT
100mV/div
AC coupled
IL 1A/div
IL 1A/div
VOUT 10.V5/Vdi/vdiv
Time base 100us/div
COUT=47uF
L=3.8uH
FSW=520k
Time base 1ms/div
Figure 33. Short-circuit behavior
OUT 10V/div
VOUT 10.V5/Vd/ivdiv SHORTED OUTPUT
IL 1A/div
Time base 5ms/div
DocID14972 Rev 4
35/40
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