MB39C308 Datasheet, PDF (5/60 Pages) Fujitsu Component Limited. – 6ch DC/DC Converter IC for LPIA Platform VR

MB39C308
Block
CH5
CH6
Common
Pin Name
FB5
PVDD5A
to
PVDD5H
CB5
LX5A
to
LX5I
PGND5A
to
PGND5I
FB6
PVDD6A
to
PVDD6J
CB6
LX6A
to
LX6J
PGND6A
to
PGND6J
CTL1
CTL2
CTL34
CTL5
CTL6
PG1
PG2
PG3
PG4
PG5
PG6
ALLPG
FSEL4
I/O
Description
I CH5 Error amplifier input pin, being connected to output of CH5.
⎯ Power supply pins of the CH5 output block.
O Internal power supply pin of the CH5 gate driver block.
⎯ CH5 inductor connection pins.
⎯ Ground pins of the CH5 output block.
I CH6 Error amplifier input pin, being connected to output of CH6.
⎯ Power supply pins of the CH6 output block.
O Internal power supply pin of the CH6 gate driver block.
⎯ CH6 inductor connection pins.
⎯ Ground pins of the CH6 output block.
I CH1 Control input pin. (L : Standby / H : Normal operation)
I CH2 Control input pin. (L : Standby / H : Normal operation)
I CH3 and CH4 control input pin. (L : Standby / H : Normal operation)
I CH5 Control input pin. (L : Standby / H : Normal operation)
I CH6 Control input pin. (L : Standby / H : Normal operation)
O CH1 POWERGOOD output pin. (N-ch MOS open drain output)
O CH2 POWERGOOD output pin. (N-ch MOS open drain output)
O CH3 POWERGOOD output pin. (N-ch MOS open drain output)
O CH4 POWERGOOD output pin. (N-ch MOS open drain output)
O CH5 POWERGOOD output pin. (N-ch MOS open drain output)
O CH6 POWERGOOD output pin. (N-ch MOS open drain output)
O
POWERGOOD output pin (The ALLPG pin outputs “H”, When channels CH3,
CH4, CH5 and CH6 are the power good).
CH4 switching frequency setting pin.
I FSEL4 = “H” : 700 kHz
FSEL4 = “L” : 0.35 MHz (Shown in the “■ ELECTRICAL CHARACTERISTICS” )
(Continued)
DS04-27261-6E
5