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IR3476MTRPBF Datasheet(PDF) 9 Page - International Rectifier

Part # IR3476MTRPBF
Description  12A Highly Integrated SupIRBuck IR3476 TM
Download  21 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3476MTRPBF Datasheet(HTML) 9 Page - International Rectifier

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August 8, 2012 | ADVANCED DATASHEET | V2.1 | PD97603
9
IR3476
12A Highly Integrated SupIRBuck
TM
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 4, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, TA = 25
oC, no airflow,
unless otherwise specified.
Figure 5: Efficiency vs. Load Current for VOUT = 1.05V
0
50
100
150
200
250
300
350
400
0
3
6
9
12
Load Current (A)
Figure 7: Switching Frequency vs. Load Current
Figure 9: Load Regulation
Figure 6: Efficiency vs. Load Current for VIN = 12V
0
200
400
600
800
1000
1200
1400
200 250 300 350 400 450 500 550 600 650 700 750
Switching Frequency (kHz)
5.0 Vout
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Figure 8: RFF vs. Switching Frequency
Figure 10: Line Regulation at IOUT = 12A
1.050
1.052
1.054
1.056
1.058
1.060
8
9
10 11 12 13 14 15 16 17 18 19
Input Voltage (V)
1.050
1.052
1.054
1.056
1.058
1.060
0
2
4
6
8
10
12
Load Current (A)
12VIN
8VIN
19VIN
50%
60%
70%
80%
90%
100%
0.01
0.1
1
10
100
Load Current (A)
VOUT = 1.05V; L = 1.5
µH, 3.8mΩ
VOUT = 1.5V; L = 2.2
µH, 4.6mΩ
VOUT = 3.3V; L = 3.3µH, 7.7m
Ω
45%
55%
65%
75%
85%
95%
0.01
0.1
1
10
100
Load Current (A)
12VIN
8VIN
19VIN


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