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PDF MB39C308 Data sheet ( Hoja de datos )
| Número de pieza | MB39C308 | |
| Descripción | 6ch DC/DC Converter IC | |
| Fabricantes | Fujitsu | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MB39C308 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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FUJITSU MICROELECTRONICS
DATA SHEET
DS04-27261-6E
ASSP for Power Management Applications of
Ultra Mobile PC
6ch DC/DC Converter IC
for LPIA Platform VR
MB39C308
■ DESCRIPTION
The MB39C308 is a 6ch DC/DC buck converter LSI, which integrates all of necessary power supplies for Ultra-
Mobile PC powered by 2-cell Li-ion battery. And the MB39C308 uses current mode topology with N-channel
synchronous rectification to realize high conversion efficiency.
The MB39C308 is the Power Management IC supporting the LPIA(Low Power Intel Architecture) which Intel
Corporation proposes as the low power consumption platform for UMPC.
The CH1 and CH2 are flexible to adopt the output current capability by selection of external FETs and easy to
optimize efficiency. The CH3, CH4, CH5 and CH6 integrate the switching FETs capable of high current for down-
sizing the power supply solution.
The MB39C308 uses Fujitsu’s LDMOS process technology and supplies all power without dispersing power from
a lithium-ion battery.
■ FEATURES
• Input voltage range
: 5.5 V to 12.6 V
• Topology
: Current Mode
• Integrated FET Driver for external MOSFETs : CH1, CH2
• Integrated Switching MOSFETs
: CH3, CH4, CH5, CH6
• Fixed Preset Output Voltage
: CH1, CH2, CH5
• Selectable Preset Output Voltage
: CH3, CH4, CH6
Channel
Output
voltage
Output
current
Remarks
CH1
5V
2 A*
⎯
CH2
3.3 V
4.5 A*
⎯
CH3
CH4
1.8 V/1.5 V
0.9 V/0.75 V
Max : 2.7 A
DDR2/DDR3 are selectable.
Max : 1.5 A
CH5
1.5 V
Max : 2.5 A
⎯
CH6
1.1 V/1.05 V Max : 3.5 A Two values are selectable.
* : It is the reference value at the typical EVB.
(Continued)
Copyright©2007-2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved
2009.9
www.DataSheet4U.net
1 page  
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
5 Page 
MB39C308
(Continued)
Parameter
Symbol
Condition
Value
Unit
Min Typ Max
VB output capacitor
CVB VB pin
⎯ 1 ⎯ μF
VREF output capacitor CVREF VREF pin
⎯ 4.7 ⎯ μF
VREF output current
IVREF VREF pin
−1 ⎯
0 mA
PG input voltage
VPG PG1 to PG6, ALLPG pin
⎯⎯ 6V
PG sink current
IPG PG1 to PG6, ALLPG pin
⎯⎯
2 mA
CTL input voltage
VCTL CTL1 to CTL6 pin
⎯ ⎯ AVDD V
VSEL input voltage
VSEL VSEL34, DVSEL6 pin
⎯⎯ 6V
FSEL input voltage
VFSEL FSEL4 pin
⎯⎯ 6V
SS input voltage
VSS SS1, SS2 pin
⎯ ⎯ VB V
* : The MB39C308 is designed with assumed operating conditions, which is 60% of the maximum output current
on the each channel and being operated with recommended input voltage range.
WARNING: The recommended operating conditions are required in order to ensure the normal operation of
the semiconductor device. All of the device's electrical characteristics are warranted when the
device is operated within these ranges.
Always use semiconductor devices within their recommended operating condition ranges.
Operation outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented
on the data sheet. Users considering application outside the listed conditions are advised to contact
their representatives beforehand.
DS04-27261-6E
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MB39C308.PDF ] | |
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