Datasheet


    
   
SLVS213C − MAY 1999 − REVISED AUGUST 2008
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 25
Skip = High
Skip = Low
V
(3V8)
= 0 V
I
O
= 100 mA
50
30
20
0
1.5 2 2.5 3
Efficiency − %
70
80
EFFICIENCY
vs
INPUT VOLTAGE
100
3.5 4
10
40
60
90
V
IN
− Input Voltage − V
Figure 26
Skip = High
Skip = Low
V
(3V8)
= V
IN
I
O
= 100 mA
50
30
20
0
1.5 2 2.5 3
Efficiency − %
70
80
EFFICIENCY
vs
INPUT VOLTAGE
100
3.5 4
10
40
60
90
V
IN
− Input Voltage − V
Figure 27
t − Time −µs
2
1.5
1
0.5
−100 0
− Output Voltage − V
2.5
3
START-UP TIMING
3.5
100 200
V
O
R
0
= 16.5 Ω
V
IN
= 2.4 V
V
(3V8)
= 0 V
Enable
OUTPUT
0
−0.5
300 400 500 600
Figure 28
t − Time −µs
2.5
2
1.5
1
−100 0
− Output Voltage − V
3
3.5
START-UP TIMING
4
100 200
V
O
0.5
−0.5
300 400 500 600
0
Enable
OUTPUT
R
0
= 19 Ω
V
IN
= 2.4 V
V
(3V8)
= V
IN
†T
C
= 25°C, V
COM
= V
SYNC
= 0 V, C
IN
= 10 µF, C
1F
= C
2F
= 2.2 µF, C
O
= 22 µF, unless otherwise noted