l4956 STMicroelectronics, l4956 Datasheet - Page 4

• Manufacturer Part Number: l4956
• Description: 5a Low Drop Linear Regulator
• Manufacturer: STMicroelectronics

L4956
Figure 1. DC Operating Area.
O utput C urrent [A]
Figure 3. Load Regulation.
Figure 5. Maximum Output Current vs.
1 0
4/8
8
7
6
5
4
3
2
1
0
O u tp u t C u rre nt [A ]
9
8
7
6
5
4
3
2
1
0
0
-4 0 -20
-1
-2
-3
-4
-5
V pw > 3V
V s ig > 4.5 V
T j = 1 25 C
5
4
3
2
1
0
R d s on
lim it
0
1
Junction Temperature
0
2
1
20
D C O p e ra ting A rea
(Vpw - Vout) [V ]
P u ls e d tec n iq u e h as b e e n u s e d
P u ls e d te cn iq u e h a s b e e n u s e d
C u rre nt Lim ita ti o n
3
4 0
Tj [ºC ]
2
I ou t [A ]
6 0
4
Tc = 7 0 C
P dm ax =2 2 W
V p w = 3.3 V
V s i g = 5V
Vo u t = Va d j
T j = 2 5 C
8 0 10 0 12 0 1 40 1 60
P ow e r
D issip a tio n
L im it
5
3
(V p w -Vo u t) > 2 V
6
Tc = 2 5 C
P dm ax = 4 0 W
4
7
5
8
Figure 2. Output Voltage Stability vs.
1 .2 7 5
1 .2 6 5
1 .2 5 5
1 .2 4 5
Figure 4. Dropout Voltage.
Figure 6. Quiescent Current at pin VSIG vs.
1 .8
1 .6
1 .4
1 .2
0 .8
0 .6
0 .4
Vo ut [V ]
I q [m A ]
1 .2 8
1 .2 7
1 .2 6
1 .2 5
1 .2 4
2
1
1 .2 5
0 .7 5
0 .2 5
- 4 0 - 2 0
0 .5
1
0
-40
0
Junction Temperature
Junction Temperature.
0
1
0
2 0
P u ls ed te c hn iq u e h a s b e e n u s e d
4 0
2
4 0
T j [ C ]
T j [ C ]
V pw = 3.3V
V sig = 5V
I out = 1 0m A
6 0
Io u t [A ]
3 V < V P W < 6 .5 V
V
I o u t = 1 0 m A to 5 A
S IG
3
8 0 1 0 0 1 2 0 1 4 0 1 6 0
= 6 . 5 V
8 0
4
12 0
T j = - 4 0 C
T j = 1 2 5 C
T j = 2 5 C
5
1 6 0
6