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L5983 数据表(PDF) 32 Page - STMicroelectronics

部件名 L5983
功能描述  1.5 A step-down switching regulator
PDF  37 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5983 数据表(HTML) 32 Page - STMicroelectronics

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Application information
L5983
32/37
Figure 28.
Load regulation
Figure 29.
Line regulation
Figure 30.
Load transient:
from 300 mA to 1.3 A
Figure 31.
Soft-start
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.2
0.4
0.6
0.8
1
1.2
1.4
IO [A]
VCC=18V
VCC=5V
VCC=12V
-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
IL
0.5A/div
VOUT
AC coupled
100mV/div
COUT=47uF
L=6.8uH
FSW=500kHz
Timescale
100us/div
IL
0.5A/div
VOUT
AC coupled
100mV/div
COUT=47uF
L=6.8uH
FSW=500kHz
Timescale
100us/div
Load slew rate = 2.5A/us
IL
0.5A/div
VOUT
AC coupled
100mV/div
COUT=47uF
L=6.8uH
FSW=500kHz
Timescale
100us/div
IL
0.5A/div
VOUT
AC coupled
100mV/div
COUT=47uF
L=6.8uH
FSW=500kHz
Timescale
100us/div
Load slew rate = 2.5A/us
V
OUT
0.5V/div
V
FB
200mV/div
I
L
0.5A/div
Time base = 1 ms/div
V
OUT
0.5V/div
V
FB
200mV/div
I
L
0.5A/div
V
OUT
0.5V/div
V
FB
200mV/div
I
L
0.5A/div
Time base = 1 ms/div
Figure 32.
Short circuit behavior
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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