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FAN5361UC10X View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
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FAN5361UC10X
Fairchild
Fairchild Semiconductor Fairchild
FAN5361UC10X Datasheet PDF : 17 Pages
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Typical Performance Characteristics (Continued)
Unless otherwise noted, VIN = VEN = 3.6V, VMODE = 0V, VOUT = 1.82V, TA = 25°C.
50
45
VIN=2.5V
VIN=3.6V
40
VIN=5.5V
35
30
25
20
COUT=4.7μF nom.
15
10
5
0
0.1
0.2
0.3
0.4
0.5
0.6
ILOAD Output Current (A)
Figure 11. Peak-to-Peak Output Voltage Ripple
45
40
2.5VIN
35
3.6VIN
30
5.5VIN
25
20
VOUT=1.2V
COUT=4.7µF nom.
15
10
5
0
0
0.1
0.2
0.3
0.4
0.5
0.6
ILOAD Output Current (A)
Figure 12. 1.2VOUT Peak-to-Peak Output Voltage Ripple
Figure 13. Effect of tOFF(MIN) on Switching Frequency
7
6
5
4
3
2
1
VOUT=1.2V
0
0
0.1
0.2
0.3
0.4
Load Current (A)
VIN>2.4V
VIN=2.3V
0.5
0.6
Figure 14. 1.2VOUT Effect of tOFF(MIN) on
Switching Frequency
350
300
Always PWM
250
200
The switching mode changes
at these borders
150
100
50
0
2.5
Always PFM
PFM Border
PWM Borde
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
Figure 15. PFM / PWM Boundaries
350
300
Always PWM
250
200
The switching mode changes
at these borders
150
100
Always PFM
50
0
2.5
3.0
3.5
4.0
4.5
Input Voltage (V)
PFM border
PWM border
5.0
5.5
Figure 16. 1.2VOUT PFM / PWM Boundaries
© 2008 Fairchild Semiconductor Corporation
FAN5361 • Rev. 1.0.0
6
www.fairchildsemi.com
 

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