L4956 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L4956' PDF : 8 Pages View PDF
L4956
Figure 1. DC Operating Area.
O utput C urrent [A]
8
V pw > 3V
7 V sig > 4.5V
Tj = 125°C
C u rre nt Lim ita ti o n
Tc = 2 5° C
Pdm ax = 40 W
6
R d s on
5
lim it
P ow e r
D issip a tio n
L im it
4
Tc = 7 0° C
3
Pdm ax=22 W
2
D C O p e ra ting A rea
1
0
012345678
(Vpw - Vout) [V ]
Figure 3. Load Regulation.
5
4
3
2
1
0
-1
-2
-3
-4
-5
0
Vpw = 3.3V
Vsig = 5V
Vo u t = Va d j
Tj = 25 °C
P u ls e d tec n iq u e h as b e e n u s e d
1
2
3
4
5
Iout [A]
Figure 5. Maximum Output Current vs.
Junction Temperature
O utput Curre nt [A]
10
9
(Vpw -Vout) > 2V
8
7
6
5
4
3
2
P u ls e d te cn iq u e h a s b e e n u s e d
1
0
-40 -20 0
20 40 60 80 100 120 140 160
Tj [ºC ]
4/8
Figure 2. Output Voltage Stability vs.
Junction Temperature
Vout [V]
1 .2 8
1 .2 7 5
1 .2 7
Vpw = 3.3V
V sig = 5V
Iout = 10mA
1 .2 6 5
1 .2 6
1 .2 5 5
1 .2 5
1 .2 4 5
1 .2 4
-40
0
40 80 120 160
Tj [°C]
Figure 4. Dropout Voltage.
1.25
1
0.75
0.5
Tj = 125 °C
Tj = 25 °C
Tj = -40 °C
0.25
0
0
P u ls ed te c hn iq u e h a s b e e n u s e d
1
2
3
4
5
6
Iout [A]
Figure 6. Quiescent Current at pin VSIG vs.
Junction Temperature.
Iq [m A ]
2
1 .8
V S IG = 6 . 5 V
I o u t = 1 0 m A to 5 A
1 .6
3 V < V PW < 6.5 V
1 .4
1 .2
1
0 .8
0 .6
0 .4
-40 -20 0
20 40 60 80 100 120 140 160
T j [°C ]
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