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IR3475 Datasheet(PDF) 10 Page - International Rectifier

Part # IR3475
Description  10A Highly Integrated SupIRBuck Constant On.Time Control
Download  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3475 Datasheet(HTML) 10 Page - International Rectifier

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March 27, 2013  |  V2.2  |  PD97602
10
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.
 
Figure 11: Startup 
 
Figure 13: DCM (IOUT = 0.1A) 
 
 
 
Figure 15: Over Current Protection  
(tested by shorting VOUT to PGND) 
 
Figure 12: Shutdown 
 
Figure 14: CCM (IOUT = 10A) 
 
 
Figure 16: Over Voltage Protection  
(tested by shorting FB to VOUT)
EN
PGOOD
SS
VOUT
2V/div
5V/div 1V/div 500mV/div
5ms/div
EN
PGOOD
SS
VOUT
2V/div 5V/div 1V/div 500mV/div
1ms/div
VOUT
PHASE
iL
20mV/div 5V/div 1A/div
20µs/div
VOUT
PHASE
iL
20mV/div 5V/div 5A/div
2µs/div
PGOOD
SS
VOUT
iL
5V/div
1V/div 1V/div 10A/div
5ms/div
PGOOD
FB
VOUT
iL
5V/div 1V/div 500mV/div 2A/div
50µs/div


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