L4957A Просмотр технического описания (PDF) - STMicroelectronics
Номер в каталоге
Компоненты Описание
Список матч
L4957A Datasheet PDF : 7 Pages
| |||
L4957A
Figure 3: Maximum Output Current vs. Junction
Temperature
Output Current [A]
10
9
8
7
6
5
4
(Vin-Vout) > 2V
3
pin 2 = G ND
2
1
0
-40 -20 0 20 40 60 80 100 120 140 160
Tj [°C]
*P ulsed te cniq ue h as been used
Figure 4: DC Operating Area
Output Current [A]
8
Vin>2.8 V
7
Tj=1 25C
C ur re n t L im ita tio n
Tc =2 5 °C
P dmax= 40 W
6
R dso n
lim it
5
P o w e r D is s ip ation L im it
4
Tc = 7 0°C
P dmax= 22 W
3
D C Operating A rea
2
1
0
0
1
2
3
4
5
6
7
8
(Vin - Vout) [V]
Figure 5: Ripple Rejection vs. Frequency
R ip p le R e jec tio n [d B ]
100
90
V r ip ple= 3V p-p V r ipple = 0.5 V p- p
80
70
60
50
40
C in= 2 2u F
30
C ou t=2 2u F
V ou t= 1 .5V
20
V in m in = 3V
Io ut= 5A
10
0 10
100
1k
10k
F req u ency [H z ]
100k
Figure 7: Maximum Output Current vs. Drop-Out
Voltage
Io [A ]
5
4.5
Tj = 25°C
4
T j = 1 25°C
3.5
T j = 1 00°C
3
2.5
2
1.5
1
m a ximu m Ro n limits
0.5
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
∆ V = V in - Vo
4/7
Figure 6: Output Voltage vs. Output Current.
(VOUT = 1.5V)
VOUT
(V)
D00IN1109
6.3 IOUT(A)
Share Link: 