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L5980TR Datasheet(PDF) 32 Page - STMicroelectronics

Part # L5980TR
Description  0.7A step-down switching regulator
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5980TR Datasheet(HTML) 32 Page - STMicroelectronics

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L5980
Application informations
32/37
Figure 28.
Load regulation
Figure 29.
Line regulation
Figure 30.
Short circuit behavior
Figure 31.
Load transient: from 0.1A to 0.7A
Figure 32.
Soft start
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.1
0.2
0.3
0.4
0.5
0.6
0.7
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=0.7A
-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=0.7A
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
Time base 5ms/div
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
Time base 5ms/div
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
Time base 5ms/div
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
OUT
10V/div
IL
250mA/div
VOUT
1V/div
OUTPUT
SHORTED
Time base 5ms/div
I
L
200mA/div
V
OUT
50mV/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
50mV/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



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