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SP4446 Datasheet(PDF) 6 Page - Exar Corporation

Part # SP4446
Description  High Output Voltage Boost Regulator LCD Bias Regulator
PDF  10 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP4446 Datasheet(HTML) 6 Page - Exar Corporation

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



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