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RK73H1JLTD20R0F Datasheet(PDF) 9 Page - International Rectifier

Part # RK73H1JLTD20R0F
Description  10A Highly Integrated SupIRBuck Constant On.Time Control
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

RK73H1JLTD20R0F Datasheet(HTML) 9 Page - International Rectifier

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March 27, 2013  |  V2.2  |  PD97602
9
IR3475 
10A 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.
45%
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
0.01
0.1
1
10
Load Current (A)
VIN = 12V
VIN = 8V
VIN = 19V
 
Figure 5: Efficiency vs. Load Current for VOUT = 1.05V 
0
50
100
150
200
250
300
350
02468
10
Load Current (A)
 
Figure 7: Switching Frequency vs. Load Current 
1.054
1.056
1.058
1.060
1.062
1.064
0
2
468
10
Load Current (A)
12VIN
8VIN
19VIN
 
Figure 9: Load Regulation 
45%
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
0.01
0.1
1
10
Load Current (A)
VOUT = 1.05V; L = 1.5µH, 3.8mΩ
VOUT = 1.5V; L = 2.2µH, 6mΩ
VOUT = 3.3V; L = 3.3µH, 10.8mΩ
 
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  
1.054
1.056
1.058
1.060
1.062
1.064
8
9
10 11 12 13 14 15 16 17 18 19
Input Voltage (V)
 
Figure 10: Line Regulation at IOUT = 10A  


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