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IR3897MPBF Datasheet(PDF) 34 Page - International Rectifier

Part # IR3897MPBF
Description  4A Highly Integrated SupIRBuck Single?륤nput Voltage
PDF  47 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3897MPBF Datasheet(HTML) 34 Page - International Rectifier

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JANUARY 18, 2013 |DATA SHEET |    Rev 3.5
34
IR3897 
4A Highly Integrated SupIRBuck
TM  
Single‐Input Voltage, Synchronous Buck Regulator  
PD‐97663
APPLICATION DIAGRAM 
 
 
Figure 28a: Application Circuit for a 12V to 1.2V, 4A Point of Load Converter 
 
Suggested bill of materials for the application circuit 
Part Reference
Qty
Value
Description
Manufacturer
Part Number
Cin
2
10uF
1206, 25V, X5R, 20%
TDK
C3216X5R1E106M
C1 C5 C6
4
0.1uF
0603, 25V, X7R, 10%
Murata
GRM188R71E104KA01B
Cref
1
100pF
0603,50V,NP0, 5%
Murata
GRM1885C1H101JA01D
C4
1
2200pF
0603,50V,X7R
Murata
GRM188R71H222KA01B
C2
1
120pF
0603, 50V, NP0, 5%
Murata
GRM1885C1H121JA01D
Co
4
22uF
0805, 6.3V, X5R, 20%
TDK
C2012X5R0J226M
CVcc
1
2.2uF
0603, 16V, X5R, 20%
TDK
C1608X5R1C225M
C3
1
10nF
0603, 25V, X7R, 10%
Murata
GRM188R71E103KA01J
Cvin
1
1.0uF
0603, 25V, X5R, 10%
Murata
GRM188R61E105KA12D
Lo
1
1.5H
SMD 7.05x6.6x4.8mm,6.7mΩ
Cyntec
PCMB065T-1R5MS
R3
1
3.01K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF3011V
R5 R7
2
3.32K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF3321V
R6 R8
2
2.37K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF2371V
R4
1
100
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF1000V
Rt
1
39.2K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF3922V
R1 Rpg
2
49.9K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF4992V
R2
1
7.5K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF7551V
U1
1
IR3897
PQFN 4x5mm
IR
IR3897MPBF
 
 



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