sc250wltrt Semtech Corporation, sc250wltrt Datasheet - Page 11

• Manufacturer Part Number: sc250wltrt
• Description: Sc250 Step-down Dc-dc Converter With Bias Ldo For Rf Power Amplifiers
• Manufacturer: Semtech Corporation

© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics
100
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0.001
0.001
0
0
0
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
I
OUT
V
Effi ciency vs. Load Current V
Effi ciency vs. Load Current V
=300mA
IN
=3.6V
V
IN
=3.6V
I
OUT
=10mA
I
OUT
V
=600mA
IN
=2.7V
0.01
Effi ciency vs. V
0.01
V
IN
=4.2V
V
V
I
IN
V
OUT
I
=4.2V
OUT
IN
IN
=3.9V
(V)
(V)
(V)
0.1
0.1
IN
OUT
OUT
I
OUT
= 3.2V
= 1.5V
=100mA
1
1
11
100
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
30
20
10
40
90
80
70
60
50
40
30
20
10
0.001
0
0
0.001
0
0
Effi ciency vs. Load Current V
Effi ciency vs. Load Current V
V
IN
0.5
I
=3.9V
OUT
=100mA
V
Effi ciency vs. V
V
IN
IN
=3.6V
=3.3V
1
V
IN
0.01
0.01
=2.7V
V
1.5
IN
=4.2V
I
OUT
V
I
I
OUT
OUT
V
IN
IN
=600mA
(V)
(V)
=4.2V
(V)
OUT
2
, V
IN
0.1
0.1
PRELIMINARY
= 3.6V
2.5
OUT
OUT
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= 2.5V
= 1.2V
SC250
3
3.5
1
1