IR3863MPBF
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T A = 25 o C, no
airflow, unless otherwise specified
95%
95%
90%
85%
80%
7VIN
12VIN
16VIN
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
75%
70%
65%
60%
55%
50%
VOUT = 3.3V; L = 4.7uH, 23mΩ
VOUT = 1.5V; L = 3.3uH, 19.9mΩ
VOUT = 1.05V; L = 2.2uH, 11.2mΩ
0.01
0.1
1
10
0.01
0.1
1
10
Load Current (A)
Figure 1. Efficiency vs. Load Current for
VOUT = 1.05V
350
Load Current (A)
Figure 2. Efficiency vs. Load Current for
VIN = 12V
1400
5.0 Vout
4.5
300
250
200
150
100
50
1200
1000
800
600
400
200
4.0
3.0
2.0
1.0
3.5
2.5
1.5
0.5
0
0
1
2
3
4
5
6
0
1.080
1.075
Load Current (A)
Figure 3. Switching Frequency vs.
Load Current
200 250 300 350 400 450 500 550 600 650 700 750
Switching Frequency (kHz)
Figure 4. R FF vs. Switching Frequency
1.080
1.075
1.070
1.065
1.060
1.055
1.050
1.045
16VIN
12VIN
7VIN
1.070
1.065
1.060
1.055
1.050
1.045
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Load Current (A)
Figure 5. Output Voltage Regulation
8/8/2012 Rev3.2
Input Voltage (V)
Figure 6. Line Regulation at I OUT = 6A
7
相关PDF资料
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