SP4446EK-L/TR 查看數據表（PDF） - Exar Corporation
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SP4446EK-L/TR Datasheet PDF : 10 Pages
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PERFORMANCE CHARACTERISTICS
Refer to the typical application circuit, TAMB = 25°C, unless otherwise specified.
Vin=3.3V;Vout =12V Efficiency
85
80
75
70
Vin=5.0V;Vout =12V Efficiency
85
80
75
70
65
65
60
55
10 uH
22 uH
50
0
3
6
9
12
15
18
Iout (mA)
Figure 4. 12V Output Efficiency (VIN=3.3V)
60
55
10 uH
22 uH
50
0
5
10
15
20
25
30
Iout (mA)
Figure 5. 12V Output Efficiency (VIN=5V)
Vin=3.3V;Vout =15V Efficiency
80
75
70
65
60
55
10 uH
22 uH
50
0
2
4
6
8
10
12
Iout (mA)
Figure 6. 15V Output Efficiency (VIN=3.3V)
Vin=5.0V;Vout =15V Efficiency
80
75
70
65
60
55
10 uH
22 uH
50
0
3
6
9
12
15
18
Iout (mA)
Figure 7. 15V Output Efficiency (VIN=5V)
Vin=3.3V; Vout = 18V Efficiency
80
75
70
65
60
55
50
10 uH
45
22 uH
40
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Iout (mA)
Figure 8. 18V Output Efficiency (VIN=3.3V)
Vin=5.0V; Vout = 18V Efficiency
80
75
70
65
60
55
50
10 uH
45
22 uH
40
0.0
2.0
4.0
6.0
8.0 10.0 12.0 14.0
Iout (mA)
Figure 9. 18V Output Efficiency (VIN=5V)
Mar28-08
SP4446 High Output Voltage Boost Regulator, LCD Bias Regulator
6
© 2008 Exar Corporation
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