Diodes AP3503E - Manual (Page 7)

Preliminary Datasheet
340kHz, 3A Synchronous DC-DC Buck Converter AP3503E
May. 2012 Rev. 1. 6 BCD Semiconductor Manufacturing Limited
7
Typical Performance Characteristics (Continued)
T
A
=25ºC, V
IN
=12V, V
OUT
=3.3V, unless otherwise noted.
Figure 8. Output Voltage vs. Figure 9. Maximum Load Current vs.
Input Voltage Input Voltage
Figure 10. Output Ripple (I
OUT
=3A) Figure 11. Load Transient (I
OUT
=1.5 to 3A)
4 8 12 16 20
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Output Vo
ltage
(V)
Input Voltage (V)
I
OUT
=1.5A
4 8 12 16 20
1
2
3
4
5
6
Ma
x
imu
m L
o
a
d
Cu
rr
e
n
t
(A
)
Input Voltage (V)
V
OUT
=3.3V
L=10 µ H
Time 200
µs/div
Time 2
µs/div
V
IN
(AC)
200mV/div
V
OUT
(AC)
10mV/div
I
L
1A/div
I
OUT
1A/div
V
OUT
(AC)
100mV/div
V
SW
10V/div