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L4955V33 Datasheet(PDF) 10 Page - STMicroelectronics

Part # L4955V33
Description  5A ULDO LINEAR REGULATORS FAMILY
PDF  14 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4955V33 Datasheet(HTML) 10 Page - STMicroelectronics

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L4955V3.3
3
4.5
6
7.5
9
10.5 1213.5 1516.5 1819.5 2122.5
0
1
2
3
4
5
6
7
8
Input Voltage [V ]
O utput Current [A ]
Current Lim itation
Vout = 3.3V
Tj = 125
°C
Power Dissipation Lim it
Tc = 25
°C
Pdm ax=40W
Rdson
lim it
DC O perating A rea
Tc=70
°C
Pdm ax=22W
Figure 23: DC operating area.
-4 0
0
40
80
120
160
3.2
3.25
3.3
3.35
3.4
Tj [
°C]
Vo ut [V ]
Vin = 5V
Iou t = 1 0m A
Figure 24: Output Voltage Stability vs. Junction
Temperature.
-4 0
-20
0
2 0
4 0
6 0
8 0
1 00
120
140
160
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
Tj [
°C]
Iq [m A]
Vin= 5 V
I out = 10m A to 5 A
Figure 25: Quiescent Current vs. Temperature.
01
2
345
-5
-4
-3
-2
-1
0
1
2
3
4
5
Iout [A]
Vin=5V
Tj = 25
°C
(Pulsed tecnique has been used)
Figure 26: Load Regulation
-40
-20
0
20
40
60
80
100
120
1 40
160
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Tj [
°C]
4.5 V <V in <12 V
Io ut = 10m A
Figure 27: Line regulation vs. Junction Tempera-
ture.
*P ulsed tecnique ha s been used
-4 0 -20
0
2 0
4 0
6 0
8 0
100 120 140 160
0
1
2
3
4
5
6
7
8
9
10
Tj [
°C]
O utp ut C urre n t [A]
(Vin-Vout) > 2 V
pin 2 = G ND
Figure 28: MaximumOutput Current vs.Junction
Temperaturewith internalcurrent limiting
L4955
10/14



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