FAN5068 Datasheet, PDF (2/18 Pages) Fairchild Semiconductor – DDR-1/DDR-2 plus ACPI Regulator Combo

PRODUCT SPECIFICATION
FAN5068
Block Diagrams
5V DUAL
+5VSB
Q4
C13
SBSW
+5VSB
C4
C3
S3#O
VCC
EN
S3#I
SS
R5
ILIM
PGOOD
3.3 MAIN
Q5
3.3 ALW
VDDQ ^C12
Q6
G1.2
1.2 OUT ^R7 FB1.2
C17
R8
+12
R4
PWM
VCC
SYS
LDOs
VTT
LDO
S3
Q3
+5MAIN
5V MAIN
BOOT
L2
C5
Q1
HDRV
SW
ISNS ^R3
C2
C1
L1 _VDDQ
Q2
COUT
LDRV
R2
GND
FB
C9
COMP
R6
R1
C6
VDDQ IN
REF IN
C11 _R9
VTT SNS
VTT OUT
C10
R10
C8 C7
Figure 1. DDR/ACPI System Regulation Schematic
The components selected are for a 15A ouput on VDDQ.
Table 1. BOM for Figure 1
Description
Qty Ref.
See notes below
COUT
See notes below
C1, C12,
C17
Capacitor 1uF, 10%, 16VDC, X7R, 1206
2 C2, C4
Capacitor 10nF, 10%, 100VDC, X7R, 0805
1 C3
Capacitor 2.2nF, 10%, 50V, X7R, 0805
1 C6
Capacitor 33pF, 10%, 50VDC, NPO, 0805
1 C9
Capacitor 10nF, 10%, 100VDC, X7R, 0805
2 C10, C11
Capacitor 220nF, 20%, 10VDC, X5R, 0603
1 C5
Capacitor 100nF, 10%, 25VDC, X7R, 0805
1 C8
Inductor 1.8uH, 3.24mΩ, 16 Amps, 20%, 0.5"
1 L1
Inductor 0.39uH, 2.8mΩ, 15 Amps, 20%, 0.25"
1 L2
MOSFET N-CH, 8.8mΩ, 30V, 50A, D-PAK, FSID: 1 Q1
FDD6296
Vendor
Part Number
KEMET
Panasonic
AVX
Panasonic
Panasonic
AVX
Kemet
Inter-Technical
Inter-Technical
Fairchild
C1206C105K4RACTU
ECJ-2VB2A103K
08055C222KAT2A
ECJ-2VC1H330J
ECJ-2VB2A103K
06033D224MAT
C0805C104K3RACTU
SC5018-1R8M
SC7232-R39M
FDD6296
2
REV. 1.0.1 9/9/04