User guide

Data Sheet
1.2A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter AP3417B
Jan. 2013 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
7
Typical Performance Characteristics (Continued)
Figure 8. Frequency vs. Temperature
Figure 9. Reference Voltage vs. Temperature
Figure 10. Switch Current Limit vs. Temperature
Figure 11. R
DS(ON)_UP
vs. Temperature
-40 -20 0 20 40 60 80 100 120 140
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Temperature (
o
C)
Frequency (MHz)
V
IN
=V
EN
=5.0V
-40 -20 0 20 40 60 80 100 120 140
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
Temperature (
o
C)
Reference Voltage (V)
V
IN
=5.0V
-40 -20 0 20 40 60 80 100 120 140
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Temperature (
o
C)
Switch Current Limit (A)
V
IN
=5.0V
-40 -20 0 20 40 60 80 100 120 140
0.18
0.20
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.38
0.40
Temperature (
o
C)
PMOS R
DS(ON)_UP
(Ω)
V
IN
=5.0V
I
SW
=200mA