Diodes AP3408 - Manual (Page 8)

Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter AP3408
Jan. 2013 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
8
Typical Performance Characteristics (Continued)
V
IN
=V
DD
=V
PVDD
=3.3V, T
A
=25℃, unless otherwise specified.
Figure 8. NMOS ON Resistance vs. Figure 9. Frequency vs. Ambient Temperature
Ambient Temperature
Figure 10. V
FB
vs. Ambient Temperature Figure 11. Current Limit vs. Ambient Temperature
-60 -30 0 30 60 90 120 150
60
80
100
120
140
N
M
OS
ON
R
e
s
is
ta
n
ce
(
m
Ω
)
Ambient Temperature ( o C)
V
IN
=3.3V
V
FB
=0.85V
-60 -30 0 30 60 90 120 150
0.7
0.8
0.9
1.0
1.1
1.2
F
reque
nc
y (
M
Hz)
Ambient Temperature ( O C)
R
OSC
=330k
V
IN
=3.3V
V
OUT
=2.5V
-60 -30 0 30 60 90 120 150
0.5
0.6
0.7
0.8
0.9
V
FB
(V)
Ambient Temperature ( O C)
V
IN
=3.3V
V
OUT
=2.5V
-40 0 40 80 120 160
2.5
3.0
3.5
4.0
4.5
5.0
C
u
rr
e
n
t L
im
it (
A
)
Temperature ( O C)
V
IN
=3.3V