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L5981 датащи(PDF) 32 Page - STMicroelectronics

номер детали L5981
подробное описание детали  1 A step-down switching regulator
PDF  37 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5981 датащи(HTML) 32 Page - STMicroelectronics

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L5981
Application information
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Figure 28.
Load regulation
Figure 29.
Line regulation
Figure 30.
Load transient: from 0.2 A to 1 A
Figure 31.
Soft-start
Figure 32.
Short circuit behavior
0
0.05
0.1
0.15
0.2
0.25
0.3
0
0.2
0.4
0.6
0.8
1
Io [A]
VCC=3.3V
VCC=12V
VCC=5.0V
FSW=250KHz
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
2
4
6
8
10
12
14
16
18
VCC [V]
Io=1A
I
L
200mA/div
V
OUT
100mV/div
AC coupled
C
OUT=47μF
L=15
μH
F
SW=520KHz
Time base 100
μs/div
Load slew rate 2.5A/
μs
I
L
200mA/div
V
OUT
100mV/div
AC coupled
C
OUT=47μF
L=15
μH
F
SW=520KHz
Time base 100
μs/div
Load slew rate 2.5A/
μs
V
OUT
500mV/div
V
FB
200mV/div
I
L
500mA/div
Time base 1ms/div
V
OUT
500mV/div
V
FB
200mV/div
I
L
500mA/div
Time base 1ms/div
I
L
500mA/div
V
OUT
1V/div
OUT
10V/div
OUTPUT
SHORTED
Time base 5ms/div
I
L
500mA/div
V
OUT
1V/div
OUT
10V/div
OUTPUT
SHORTED
Time base 5ms/div



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