Datasheet


      
SLVS141A − JULY 1996 − REVISED JANUARY 1997
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
APPLICATION INFORMATION
system typical characteristics (continued)
Figure 9
1
0.6
0.4
0
0.5 1 1.5 2 2.5 3 4
No-Load Supply Current − mA
1.4
1.8
Supply Voltage − V
NO-LOAD SUPPLY CURRENT
vs
SUPPLY VOLTAGE
2
4.5 5 6 6.53.5 5.5
1.6
1.2
0.8
0.2
I
O
= 0 A
(see Figure 15)
Figure 11
162
160
156
154
− 40 − 20 0
− Oscillator Frequency − kHz
166
170
OSCILLATOR FREQUENCY
vs
TEMPERATURE
172
20 40
168
164
158
T − Temperature − °C
f
osc
60 80 100 120 140
V
I
= 5 V
V
I
= 6 V
V
I
= 4 V
Figure 10
200
150
50
0
3.75 4 4.25 4.5 4.75 5 5.25
Maximum Load Current − mA
250
350
Supply Voltage − V
MAXIMUM LOAD CURRENT
vs
SUPPLY VOLTAGE
400
5.75 6 6.25 6.5
300
100
5.5
(see Figure 15)
Figure 12
1
0.6
0.4
0
200 400 600 800
Switch Current Limit − A
1.4
1.8
Soft-Start Voltage − mV
SWITCH CURRENT LIMIT
vs
SOFT-START VOLTAGE
2
1000 1200
1.6
1.2
0.8
0.2
V
I
= 6 V
V
I
= 5 V
V
I
= 4 V
R1 and R2 Varied
(see Figure 15)