AP6503 Datasheet, PDF (5/13 Pages) Diodes Incorporated – 340kHz 23V 3A SYNCHRONOUS DC/DC BUCK CONVERTER

AP6503
340kHz 23V 3A SYNCHRONOUS DC/DC BUCK CONVERTER
Typical Performance Graphs (V_IN = 12V, V_OUT=3.3V ,T_A = +25°C, unless otherwise noted)
0.6
0.58
0.56
0.54
0.52
0.5
0.48
0
3.33
5
10
15
20
25
INPUT VOLTAGE (V)
Quiescent Supply Current vs. Input Voltage
3.329
3.328
3.327
3.326
3.325
3.324
3.323
3.322
3.321
3.32
4.75
9.75
14.75
19.75
INPUT VOLTAGE (V)
Line Regulation
24.75
90
85
80
75
V_IN = 5V
70
65
V_IN = 12V
60
55
50
45 ^{VOUT = 1.2V}
L = 3.3µH
40
0
1
2
3
LOAD CURRENT (A)
Efficiency vs. Load Current
0.074
0.064
0.054
0.044
0.034
0.024
0.014
0.004
0
0.92
0.918
0.916
0.914
0.912
5
10
15
20
25
INPUT VOLTAGE (V)
Shutdown Supply Current vs. Input Voltage
0.91
0.908
0.906
0.904
0.902
0.9
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Feedback Voltage vs. Temperature
90
85
80
75
V_IN = 5V
70
V_IN = 12V
65
60
55
50
45
V_OUT = 1.8V
L = 3.3µH
40
0
1
2
3
LOAD CURRENT (A)
Efficiency vs. Load Current
6.2
6
5.8
5.6
5.4
5.2
5
4.8
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (C)
Current Limit vs. Temperature
375
370
365
360
355
350
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Oscillator Frequency vs. Temperature
100
90
80
70
60
50
V_IN = 12V
V_OUT = 5V
L = 10µH
400
1
2
3
LOAD CURRENT (A)
Efficiency vs. Load Current
AP6503
Document number: DS35077 Rev. 1 - 2
5 of 13
www.diodes.com
September 2011
© Diodes Incorporated