Data Sheet
340kHz, 3A Synchronous DC-DC Buck Converter
AP3503F
Typical Performance Characteristics (Continued)
TA=25ºC, VIN=12V, VOUT=3.3V, unless otherwise noted.
200
180
160
140
120
100
80
160
140
120
100
80
60
60
40
-60
40
-60
-40
-20
0
20
40
60
80
100
120
140
-40
-20
0
20
40
60
80
100
120
140
Case Temperature (oC)
Case Temperature (oC)
Figure 8. High-side Switch On-resistance
vs. Case Temperature
Figure 9. Low-side Switch On-resistance
vs. Case Temperature
VIN_AC
200mV/div
VOUT_AC
200mV/div
VOUT_AC
20mV/div
IL
2A/div
IOUT
1A/div
VSW
10V/div
Time 200μs/div
Time 4μs/div
Figure 10. Output Ripple (IOUT=3A)
Figure 11. Load Transient (IOUT =1.5A to 3A)
Oct. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
7
DIODES [ DIODES INCORPORATED ]
