l4955 STMicroelectronics, l4955 Datasheet - Page 11

• Manufacturer Part Number: l4955
• Description: 5a Uldo Linear Regulators Family
• Manufacturer: STMicroelectronics

Figure 29: DC operating area.
8
7
6
5
4
3
2
1
0
Figure 31: Quiescent Current vs. Temperature.
Iq [mA]
2 .75
2 .25
1 .75
1 .25
0 .75
0 .25
Figure 33: Line regulation vs. Junction Tempera-
2.5
1.5
0.5
O ut put C u rr e nt [A ]
0
4.5
3.5
2.5
1.5
0.5
3
2
1
0
-40
5
4
3
2
1
0
-40
DC O pe ratin g A re a
C u rre nt L im itatio n
Rd so n
Vin = 8V
Iout = 10mA to 5A
2 .5
lim it
-20
6.5V < Vin < 15V
Iout = 10mA
-20
ture.
0
0
5
20
20
(V in - Vou t) [V ]
7 .5
40
40
T j [ C]
Tj [ C]
60
Pow er D iss ip a ti o n Lim it
60
10
80
80
T c = 70 C
P dm a x = 2 2W
1 2 .5
100
100 120 140 160
T c = 2 5 C
P d m a x = 4 0W
Vou t = 5.1V
T j = 125 C
1 20
15
140
L4955V5.1
160
1 7 .5
Figure 30: Output Voltage Stability vs. Junction
5.15
5.05
4.95
Figure 32: Load Regulation
Figure 34: Maximum OutputCurrent vs. Junction
O utput C urrent [A]
Vout [V]
10
5.2
5.1
4.9
9
8
7
6
5
4
3
2
1
0
*P ulsed tecnique ha s been used
-10
5
-40 -20
1 0
-4 0
-2
-4
-6
-8
8
6
4
2
0
0
V in = 8 V
T j = 2 5 C
(P uls e d tec n iq u e h as be en us ed )
V in = 8V
(Vin-Vout) > 2V
Iout = 1 0mA
pin 2 = G ND
Temperature.
Temperaturewith internalcurrent limiting
0
0
1
20
40
40
Tj [ C]
2
T j [ C ]
Io u t [A]
60
80 100 120 140 160
80
3
12 0
4
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1 60
5