IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 32

• Manufacturer Part Number: IR3897MTRPBF
• Description: 4A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3897MTRPBF

• Part Status: Active and Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 4
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

APPLICATION DIAGRAM
Suggested bill of materials for the application circuit
Part Reference
C1 C5 C6 Cref
R1 Rpg
R5 R7
R6 R8
CVcc
Cvin
Cin
C4
C2
Co
C3
R3
R4
R2
U1
Lo
Rt
PGood
49.9K
Vin=12 V
R
PG
32
39.2 . K
Figure 28: Application Circuit for a 12V to 1.2V, 4A Point of Load Converter
R
2.2uF
t
C
Qty
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
Vcc
2
4
1
1
4
1
1
1
1
1
2
2
1
1
2
1
1
Vcc/LDO_out
Rt/Sync
S_Ctrl
PGood
Vp
49.9K
2200pF
IR3897
120pF
Value
0.1uF
2.2uF
1.0uF
3.01K
3.32K
2.37K
39.2K
49.9K
7.5K
R2
10uF
22uF
10nF
0.1uF
1.5H
R1
7.5K
Cref
100
Vref
Enable
Gnd
IR 3897
Cvin
1.0uF
SMD 7.05x6.6x4.8mm,6.7mΩ
Single‐Input Voltage, Synchronous Buck Regulator
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
0805, 6.3V, X5R, 20%
1206, 25V, X5R, 20%
0603, 25V, X7R, 10%
0603, 16V, X5R, 20%
0603, 25V, X7R, 10%
0603, 25V, X5R, 10%
0603, 50V, NP0, 5%
Vin
0603,50V,X7R
PQFN 4x5mm
Description
PVin
PGnd
0.uF
C6
U1
Comp
Vsns
C
Boot
- 32 -
in
SW
Fb
= 2 X 10 uF
4A Highly Integrated SupIRBuck
0. 1 uF
10nF
C3
C1
2.37K
R8
Manufacturer
C2
120pF
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
3.01K
R3
1.5 uH
Murata
Murata
Murata
Murata
Murata
Cyntec
TDK
TDK
TDK
Lo
IR
3.32k
R7
3.32k
R5
2.37K
R6
GRM188R71E104KA01B
GRM188R71H222KA01B
GRM188R61E105KA12D
GRM1885C1H121JA01D
GRM188R71E103KA01J
PCMB065T-1R5MS
C3216X5R1E106M
C1608X5R1C225M
2.2nF
100
C2012X5R0J226M
C4
R4
ERJ-3EKF3011V
ERJ-3EKF3321V
ERJ-3EKF2371V
ERJ-3EKF1000V
ERJ-3EKF3922V
ERJ-3EKF4992V
ERJ-3EKF7551V
IR3897MPBF
Part Number
Co=4X22uF
TM
Vo
0.1uF
C5
IR3897
PD‐97663