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L5985 数据表(PDF) 32 Page - STMicroelectronics

部件名 L5985
功能描述  2 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

L5985 数据表(HTML) 32 Page - STMicroelectronics

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L5985
Application information
32/37
Figure 28.
Load regulation
Figure 29.
Line regulation
0
0.1
0.2
0.3
0.4
0.5
0.6
00.5
11.5
2
Io [A]
VCC=3.3V
VCC=12V
VCC=5.0V
FSW=250KHz
-0.2
0
0.2
0.4
0.6
0.8
1
2
4
6
8
10
12
14
16
18
VCC [V]
Io=2A
Io=1A
Figure 30.
Load transient form 0.3 A to 1.3 A
Figure 31.
Soft-start
Figure 32.
Short circuit behavior
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
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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