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PCMB065T-R68MS 数据表(PDF) 33 Page - International Rectifier

部件名 PCMB065T-R68MS
功能描述  6A Highly Integrated SupIRBuck
PDF  46 Pages
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制造商  IRF [International Rectifier]
网页  http://www.irf.com
标志 IRF - International Rectifier

PCMB065T-R68MS 数据表(HTML) 33 Page - International Rectifier

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- 33 -
JANURARY 18, 2013 | DATA SHEET | Rev 3.5
33
IR3898
6A Highly Integrated SupIRBuck
TM
Single-Input Voltage, Synchronous Buck Regulator
PD-97662
APPLICATION DIAGRAM
Boot
Vcc/LDO_out
Fb
Comp
Gnd
PGnd
SW
S_Ctrl
Vo=1.2V
PGood
PGood
Enable
Rt/Sync
Vin=12 V
Vin
Vp
R5
3.32k
2.37K
Co=4X22uF
Lo
1 uH
C4
2.2nF
R4
100
R3
2.0K
C3
10nF
C2
180pF
C1
0. 1 uF
Cin = 3 X 10uF
Rt
39.2
. K
RPG
49.9K
R1
49.9K
R2
7.5K
IR 3898
2.2uF
CVcc
PVin
Vref
100pF
Cref
Vsns
R6
R7
3.32k
2.37K
R8
Cvin
1.0uF
U1
C5
0.1uF
C6
0.1uF
Figure 28a: Application Circuit for a 12V to 1.2V, 6A Point of Load Converter Using the internal LDO
Suggested bill of materials for the application circuit 12V to 1.2V
Part Reference
Qty
Value
Description
Manufacturer
Part Number
Cin
3
10uF
1206, 16V, X5R, 20%
TDK
C3216X5R1E106M
C1 C5 C6
3
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
180pF
0603, 50V, NP0, 5%
Murata
GRM1885C1H181JA01D
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
1uH
SMD 7.1x6.5x5 mm ,4.7mΩ
TDK
SPM6550T-1R0
R3
1
2.0K
Thick Film, 0603,1/10W,1%
Panasonic
ERJ-3EKF2001V
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
IR3898
PQFN 4x5mm
IR
IR3898MPBF



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