Diodes AP3503 - Manual (Page 6)

Data Sheet
340kHz, 3A Synchronous DC-DC Buck Converter AP3503
May. 2012 Rev. 1. 7 BCD Semiconductor Manufacturing Limited
6
Typical Performance Characteristics
T
A
=25ºC, V
IN
=12V, V
OUT
=3.3V, unless otherwise noted.
Figure 4. Efficiency vs. Output Current Figure 5. Quiescent Current vs. Case Temperature
Figure 6. Feedback Voltage vs. Case Temperature Figure 7. Output Voltage vs. Output Current
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2
10
20
30
40
50
60
70
80
90
100
E
ffi
c
ie
n
c
y
(
%
)
Output Current (A)
V
OUT
=3.3V, T
A
=25 o C, L=10 µ H
V
IN
=5V
V
IN
=12V
-50 -25 0 25 50 75 100 125 150
0.9
1.0
1.1
1.2
1.3
1.4
Quie
scent Cu
rrent (m
A)
Case Temperature ( o C)
-50 -25 0 25 50 75 100 125 150
0.6
0.7
0.8
0.9
1.0
1.1
1.2
F
e
edb
ack
Vol
ta
ge
(V)
Case Temperature ( o C)
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2
3.0
3.1
3.2
3.3
3.4
3.5
3.6
O
u
tp
ut
Voltage (
V
)
Output Current (A)