Diodes AP3503E - Manual (Page 6)

Preliminary Datasheet
340kHz, 3A Synchronous DC-DC Buck Converter AP3503E
May. 2012 Rev. 1. 6 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. Load Current Figure 5. Quiescent Current vs. Temperature
Figure 6. Feedback Voltage vs. Temperature Figure 7. Output Voltage vs. Load Current
-50 -25 0 25 50 75 100 125 150
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
Qui
e
scen
t Cu
rr
e
n
t
(mA)
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
Fee
d
b
a
ck Vol
ta
ge (V)
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 Vo
ltage
(V)
Load Current (A)
0.01 0.1 1
10
20
30
40
50
60
70
80
90
100
Ef
ficien
c
y
(%)
Load Current (A)
V
OUT
=3.3V,L=10 µ H,T
A
=25 o C
V
IN
=5V
V
IN
=12V