Datasheet


      
SLVS141A − JULY 1996 − REVISED JANUARY 1997
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
APPLICATION INFORMATION
4
2
0
0
− 2
− 4
− 6
Voltage at EN − V
− Output Voltage − V
V
O
V
I
= 5 V
V
O
= −5 V
I
O
= 100 mA
2.5 ms/div
t − Time − s
Figure 6. Enable Response Time
system typical characteristics
Figure 7
EFFICIENCY
vs
LOAD CURRENT
I
L
− Load Current − mA
T
A
= 25°C
(see Figure 15)
74
72
70
68
50 100 150 200
Efficiency − %
76
78
80
250 300
V
I
= 4 V
V
I
= 5 V
V
I
= 6 V
Figure 8
I
L
− Load Current − mA
1
0.6
0.2
0
0 50 100 150 200
Peak Inductor Current − A
1.2
1.4
PEAK INDUCTOR CURRENT
vs
LOAD CURRENT
1.8
250 300 350
V
I
= 5 V
(see Figure 15)
1.6
0.8
0.4