Diodes AP3203 - Manual (Page 7)

Preliminary Datasheet
380kHz, 3A Asynchronous DC - DC Buck Converter AP3203
Mar. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
7
Typical Performance Characteristics (Continued)
T
A
=25 ºC , V
IN
=12V, V
OUT
=3.3V, unless otherwise noted.
Figure 8. R
DSONH
vs. Temperature Figure 9. R
DSONL
vs. Temperature
Figure 10. Output Ripple Figure 11. Load Transient
(V
IN
=12V,V
OUT
=3.3V, I
OUT
=3A) (V
IN
=12V, V
OUT
=3.3V, I
OUT
=2A to 3A)
V
SW
5V/div
I
L
1A/div
V
OUT(AC)
20mV/div
Time 10ms/div
I
L
1A/div
V
OUT(AC)
200mV/
di
-60 -40 -20 0 20 40 60 80 100 120 140
60
70
80
90
100
110
120
130
140
150
160
170
Hi
gh-side S
w
it
ch O
n
-res
ist
ance (
m
Ω
)
Temperature ( o C)
-40 -20 0 20 40 60 80 100 120 140
6
8
10
12
14
16
18
Low
-s
id
e Swi
tch
O
n
-resist
an
c
e
(
Ω
)
Temperature ( o C)
Time 2 µs/div Time 400 µs/div