FAN5355 Fairchild Semiconductor, FAN5355 Datasheet - Page 10

• Manufacturer Part Number: FAN5355
• Description: The FAN5355 device is a high-frequency, ultra-fast transient response, synchronous step-down DC-DC converter optimized for low-power applications using small, low-cost inductors and capacitors
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN5355 • Rev. 1.1.0
Typical Performance Characteristics
Unless otherwise specified, Auto-PWM/PFM, V
Efficiency
100 %
100 %
90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
0%
0%
Figure 7. Efficiency vs. Load at V
Figure 9. Efficiency vs. Load at V
1
1
Auto PWM/PFM
Forced PWM
Auto PWM/PFM
Forced PWM
I
I
LOAD
LOAD
10
10
Ou tput Curre nt (mA)
Ou tpu t Curre nt (mA)
V
V
IN
OUT
V
V
= 3.6V
IN
OUT
= 1.5V
10 0
= 3.6V
10 0
= 1.05V
OUT
OUT
IN
= 1.05V
= 1.50V
= 3.6V, T
100 0
100 0
A
= 25°C, and recommended components as specified in Table 1.
10
100 %
100%
90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0%
Figure 8. Efficiency vs. Load at V
Figure 10. Efficiency vs. Load at V
1
1
Auto PWM/PFM
Forced PWM
Auto PWM/PFM
Forced PWM
I
I
LOAD
LOAD
10
10
Ou tput Curre nt (mA)
Output Current (mA)
V
V
IN
OUT
V
V
= 3.6V
IN
OUT
= 1.8V
= 3.6V
100
100
= 1.35V
OUT
OUT
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= 1.35V
= 1.80V
100 0
1000