SC251 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC251' PDF : 19 Pages View PDF
POWER MANAGEMENT
Typical Characteristics (Cont.)
Efficiency vs. VOUT
100
90
IOUT=100mA
80
IOUT=600mA
70
60
50
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Vout(V)
3.5
4.0
VIN=4 V
VOUT vs. IOUT
1.600
1.595
1.590
1.585
1.580
1.575
1.570
1.565
1.560
1.555
1.550
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
IOUT(A)
0.8
0.9
VIN=4 V
SC251
VOUT vs. VDAC
4.5
Pass-Through
4.0
3.5
3.0
VMODE=VIN
VMODE=GND
2.5
2.0
1.5
1.0
0.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
VDAC(V)
VREF vs. VIN
2.836
2.835
2.834
2.833
2.832
2.831
2.830
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
VIN (V)
IR EF=5 m A
1000
975
950
925
900
875
850
2.5
Oscillator Frequency vs. VIN
TJ=25°C
TJ=50°C
TJ=0°C
TJ=85°C
TJ=-40°C
3
3.5
4
4.5
5
VIN (V)
2.845
2.840
2.835
2.830
2.825
0.0001
© 2006 Semtech Corp.
14
VREF vs. IREF
0.0010
IR EF(A)
0.0100
www.semtech.com
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