Diodes AP3417A - Manual (Page 6)

Data Sheet
1A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter AP3417A
Aug. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
6
Typical Performance Characteristics
V
IN
=5V, T
A
=25 ºC , unless otherwise specified.
Figure 4. Efficiency vs. Input Voltage Fi gure 5. Efficiency vs. Output Current
Figure 6. Reference Voltage vs. Temperature Figure 7. Switch Current Limit vs. Temperature
2.5 3.0 3.5 4.0 4.5 5.0 5.5
50
55
60
65
70
75
80
85
90
95
100
Input Voltage (V)
Ef
fic
ienc
y (%)
V
OUT
= 1.8V
I
OUT
= 1.0A
0.0 0.2 0.4 0.6 0.8 1.0
60
65
70
75
80
85
90
95
100
Output Current (A)
Ef
ficien
c
y
(%)
V
IN
= 5.0V
V
OUT
=1.8V
-40 -20 0 20 40 60 80 100 120 140
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Temperature ( o C)
Switc
h
Cu
rrent Li
m
it
(A
)
V
IN
= 5.0V
-40 -20 0 20 40 60 80 100 120 140
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
Temperature ( o C)
Reference V
o
lt
age
(V)
V
IN
= 5.0V