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L4957AD1.8 Datasheet(PDF) 8 Page - STMicroelectronics

Part # L4957AD1.8
Description  Up to 5A ULDO linear regulator
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4957AD1.8 Datasheet(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
L4957A
8/12
Figure 8.
Ripple rejection vs. frequency Figure 9.
Output voltage vs. output
current (VOUT = 1.5V)
Figure 10. Maximum output current vs.
junction temperature
0
10
20
30
40
50
60
70
80
90
1 00
F requ enc y [ H z]
Rip p le Re je c tio n [d B ]
1k
1 0
100
10k
1 00k
V ripple= 3V p- p
V r ipple= 0. 5V p-p
C in= 22uF
C out = 22uF
V out = 1 .5 V
Vin m in = 3 V
Iout= 5 A
6.3
IOUT(A)
VOUT
(V)
D00IN1109
0
0 .2 0.4 0 .6 0.8
1
1.2 1 .4 1.6 1 .8 2
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
∆ V = Vin - V o
Io [A ]
m a x im u m R o n lim its
T j = 100° C
T j = 125° C
T j = 25°C



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