MB39C308 Datasheet, PDF (7/60 Pages) Fujitsu Component Limited. – 6ch DC/DC Converter IC for LPIA Platform VR

■ BLOCK DIAGRAM
Used in 2-cell Li-Ion power system
Pull up
resistor
VIN
Vo1
(5.5 V to 12.6 V)
Pull up
resistor
Vo2
Pull up
resistor
Vo3
Pull up
resistor
VREF
Vo4
Pull up
resistor
Vo5
Pull up
resistor
Vo6
Pull up
resistor
Connecting to
VB/VREF/GND
PG1
CTL1
FB1
MB39C308
System
( CH1 5.0 V )
C-mode step-down
PVDD1
OUT1H
CB1
LX1
OUT1L
PGND1
PG2
CTL2
FB2
PG3
CTL34
VSEL34
FB3
PG4
FSEL4
FB4
PG5
CTL5
FB5
PG6
CTL6
DVSEL6
FB6
ALLPG
( CH2 3.3 V )
C-mode step-down
DDR
( CH3 1.8 V / 1.5 V )
C-mode step-down
( CH4 0.9 V / 0.75 V )
C-mode step-down
Chip set
( CH5 1.5 V )
C-mode step-down
( CH6 1.1 V / 1.05 V )
C-mode step-down
PVDD2
OUT2H
CB2
LX2
OUT2L
PGND2
PVDD3A to
PVDD3I
CB3
LX3A to LX3I
PGND3A to
PGND3I
PVDD4A to
PVDD4G
CB4
LX4A to LX4H
PGND4A to
PGND4H
PVDD5A to
PVDD5H
CB5
LX5A to LX5I
PGND5A to
PGND5I
PVDD6A to
PVDD6J
CB6
LX6A to LX6J
PGND6A to
PGND6J
AVDD
SS1
SS2
Protection
Common
PVDD7
DIN
VB
PGND7
AGND VREF
DS04-27261-6E
MB39C308
FB1
Vo1
To 5.0 V system
FB2
Vo2
To 3.3 V system
FB3
Vo3
To DDR2/DDR3
FB4
Vo4
To DDR2/DDR3 termination
FB5
Vo5
To 1.5 V chipset
FB6
Vo6
To 1.05 V/1.1 V chipset
7