Datasheet
SLUS446B – MAY 2000 – REVISED DECEMBER 2000
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
0 400 1000 1600 200
0
V
OUT
10 mV/div
Figure 16. Load Step
250 mA Transition to 500 mA
(Circuit Shown in Figure 9.)
V
IN
= 7 V
V
OUT
= 3.3 V
500 mA
250 mA
Figure 17. Load Step
500 mA Transition to 250 mA
(Circuit Shown in Figure 9.)
0 400 1000 1600 2000
V
OUT
10 mV/div
V
IN
= 7 V
V
OUT
= 3.3 V
500 mA
250 mA
TYPICAL CHARACTERISTICS
Figure 18
0.1 1 10 100 1000
0
20
40
60
80
100
EFFICIENCY
vs
LOAD CURRENT
Load Current – mA
Efficiency – %
Automatic
Frequency
Fixed
Frequency
V
IN
= 7.2 V
V
OUT
= 3.3 V
Figure 19
0.1 1 10 100 1000
20
40
60
80
100
0
EFFICIENCY
vs
LOAD CURRENT
Load Current – mA
Efficiency – %
Automatic
Frequency
Fixed
Frequency
V
IN
= 5 V
V
OUT
= 3.3 V