SC251EVB SEMTECH [Semtech Corporation], SC251EVB Datasheet - Page 13

• Manufacturer Part Number: SC251EVB
• Description: Step-down DC-DC Converter with Bias LDO for WCDMA Amplifi ers
• Manufacturer: SEMTECH [Semtech Corporation]

POWER MANAGEMENT
© 2006 Semtech Corp.
Typical Characteristics
100
100
100
90
80
70
90
80
70
60
50
40
30
20
10
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0.001
0
0
0
0.001
0.001
V
OUT
Effi ciency vs. Load
Effi ciency vs. Load
Effi ciency vs. Load
=3.4V (Pass-Through)
V
IN
V
0.010
0.010
0.010
=3.6V
IN
=3.6V
V
V
V
OUT
OUT
OUT
=3.4V,V
=1.8V
I
=1.5V
OUT
I
OUT
I
OUT
V
(A)
IN
IN
(A)
V
(A)
=4.2V
=4V
IN
=4.2V
0.100
0.100
0.100
1.000
1.000
1.000
13
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
0
0
0.001
2.5
3.0
Effi ciency vs. Load
Effi ciency vs. V
Effi ciency vs. Load
0.010
V
0.010
IN
3.5
=3.6V
V
IN
V
V
=3.6V
V
OUT
OUT
OUT
=2.5V
=1.8V
=1.2V
Vin(V)
I
OUT
I
4.0
OUT
I
(A)
OUT
(A)
V
V
=600mA
IN
IN
=4.2V
=4.2V
IN
0.100
4.5
0.100
I
I
OUT
OUT
I
OUT
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=300mA
=100mA
=10mA
5.0
SC251
1.000
5.5
1.000