Diodes AP3417B - Manual (Page 6)

Data Sheet
1.2A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter AP3417B
Jan. 2013 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
6
Typical Performance Characteristics
Figure 4. Efficiency vs. Output Current Figure 5. Efficiency vs. Output Current
Figure 6. Output Voltage vs. Output Current Figure 7. Frequency vs. Input Voltage
0.0 0.2 0.4 0.6 0.8 1.0 1.2
50
55
60
65
70
75
80
85
90
95
100
Output Current (A)
Ef
fi
cien
cy
(%)
V
IN
=5.0V
V
OUT
=1.8V
0.01 0.1 1
50
55
60
65
70
75
80
85
90
95
100
Output Current (A)
E
ffi
c
ie
n
c
y
(
%
)
V
IN
=5.0V
V
OUT
=1.8V
0 200 400 600 800 1000 1200
1.73
1.74
1.75
1.76
1.77
1.78
1.79
1.80
1.81
Output Current (mA)
O
u
tp
ut
V
o
lt
a
ge
(V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
Input Voltage (V)
F
requ
ency
(M
Hz
)