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IR3899MPBF Datasheet(PDF) 35 Page - International Rectifier

Part # IR3899MPBF
Description  9A HIGHLY INTEGRATED SUPLRBUCK
PDF  43 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3899MPBF Datasheet(HTML) 35 Page - International Rectifier

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August 08, 2012 |DATA SHEET | 3.4
35
IR3899 
9A Highly Integrated SupIRBuck
TM  
Single‐Input Voltage, Synchronous Buck Regulator  
PD‐97661
TYPICAL OPERATING WAVEFORMS 
Vin = 12V, Vo = 1.2V, Iout = 0‐9A, Room Temperature, No Air Flow  
 
 
 
 
 
  
 
Figure 36: Turn on at No Load showing Vcc level  
                 Figure 37: Turn on at Full Load showing Vcc level 
Ch1:Vin,   Ch2:Vout,  Ch3:Vcc,   Ch4:Inductor current   
 
Ch1:Vin,   Ch2:Vout,  Ch3:Vcc,   Ch4:Inductor current   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
38: Transient Response, 4.5A to 9A step at 2.5A/uSec slew rate,  
Ch2:Vout, Ch4‐Iout (5A/Div) 



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