Datasheet
SGLS243A − APRIL 2004 − REVISED JUNE 2008
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
40
50
60
70
80
90
100
0.1 1 10 100 1000
V
O
= 1.8 V
V
I
= 3.6 V
Efficiency − %
EFFICIENCY
vs
LOAD CURRENT
I
O
− Load Current − mA
V
I
= 5 V
Figure 6
0
50
100
150
200
250
300
0 100 200 300 400 500 600
V
O
= 2.5 V
V
O
= 3.3 V
Dropout Voltage − mV
DROPOUT VOLTAGE
vs
LOAD CURRENT
I
O
− Load Current − mA
Figure 7
30
35
40
45
50
55
60
2 2.5 3 3.5 4 4.5 5 5.5
T
A
= 20°C
Power-Save Mode,
SYNC = Low
− Operating Quescent Current −
OPERATING QUIESCENT CURRENT
vs
INPUT VOLTAGE (POWER SAVE MODE)
I
(Q)
Aµ
V
I
− Input Voltage (Power Save Mode) − V
T
A
= 80°C
T
A
=−40°C
Figure 8
1000
1500
2000
2500
3000
3500
4000
2 2.5 3 3.5 4 4.5 5 5.5
T
A
= 20°C
Forced PWM,
SYNC = High
− Operating Quescent Current −
OPERATING QUIESCENT CURRENT
vs
INPUT VOLTAGE (FORCED PWM)
Aµ
V
I
− Input Voltage (Forced PWM) − V
T
A
=−40°C
T
A
= 80°C
I
(Q)