ir3841 International Rectifier Corp., ir3841 Datasheet - Page 23

• Manufacturer Part Number: ir3841
• Description: Integrated 8a Synchronous Buck Regulator
• Manufacturer: International Rectifier Corp.

Part Reference
Cin
Lo
Co
R1
R2
R
R
R
C
R3
C3
C4
R8
R9
R10
C7
U1
4.5 V <Vcc<5.5V
PGood
t
OCSet
PG
ss
02/09/09
Application Diagram:
0.1 uF
Vin = 12 V
C
4.7 K
Fig. 16. Application circuit diagram for a 12V to 1.8 V, 8 A Point Of Load Converter
R
SS
PG
23.7 K
R
t
Suggested Bill of Materials for the application circuit:
Quantity
Vcc
4.99 K
Seq
Rt
SS/ SD
PGood
750
R
R
1
2
1 330uF
4 10uF
1 1.0uH
6 22uF
1 4.99K
1 750
1 23.7k
1 2.67k
1 4.7K
1 0.1uF
1 3.01k
1 150pF
1 10000pF
1 4.02K
1 2.55K
1 130
1 2200pF
1 IR3841
Value
Enable
Gnd
IR3841
Description
SMD Elecrolytic, Fsize, 25V, 20%
1206, 16V, X7R, 20%
11.5x10x5mm, 20%, 2.34mOhm
0805, 6.3V, X5R, 20%
Thick Film, 0603,1/10 W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10 W,1%
Thick Film, 0603,1/10W,1%
0603, 25V, X7R, 10%
Thick Film, 0603,1/10W,1%
50V, 0603, NPO, 5%
0603, 50V, X7R, 10%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
Thick Film, 0603,1/10W,1%
0603, 50V, X7R, 10%
SupIRBuck PQFN 5x6mm
Vin
PGnd
C
in
= 4 X 10 uF +
OCSet
Comp
330 uF
Boot
SW
Fb
10 nF
C4
2.67 K
0.1 uF
R
150 pF
OCSet
C6
C3
3.01 K
R3
1uH
Lo
4.02 K
Manufacturer
Panasonic
Panasonic - ECG
Delta
Panasonic- ECG
Rohm
Rohm
Rohm
Rohm
Rohm
Panasonic - ECG
Rohm
Panasonic- ECG
Panasonic - ECG
Rohm
Rohm
Panasonic - ECG
Panasonic - ECG
International Rectifier
R8
2.55 K
R9
IR3841MPbF
2.2nF
R10
130
C7
Part Number
EEV-FK1E331P
ECJ-3YX1C106K
MPL105-1R0
ECJ-2FB0J226ML
MCR03EZPFX4991
MCR03EZPFX7500
MCR03EZPFX2372
MCR03EZPFX2671
MCR03EZPFX4701
ECJ-1VB1E104K
MCR03EZPFX3011
ECJ-1VC1H151J
ECJ-1VB1H103K
MCR03EZPFX4021
MCR03EZPFX2551
ERJ-3EKF1300V
ECJ-1VB1H222K
IR3841MPbF
Co=6X22uF
Vo
23