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The following document contains information on Cypress products.
FUJITSU SEMICONDUCTOR
FACT SHEET
NP405-00003-1v0-E
ASSP for Power Supply Applications
System Power Management IC for LCD Panel
with VCOM Regulator DC/DC Converter IC
MB39A302
MB39A302 consists of 2ch DC/DC converter, 2ch charge pump type DC/DC converter, 1ch LDO,
an operational amplifier for VCOM calibration and a gate voltage shaping circuit.
The buck converter is a voltage mode asynchronous converter with integrated switching FET.
The boost converter equips integrated switching FET with voltage mode control.
■ DESCRIPTION

Power supply voltage range (VIN=VINVL=VIN2) : 8V to14V

Structure: Vlogic/Vs: voltage mode DC/DC converter included switching FET
VGL/VGH: charge pump with output voltage feedback

Low dropout regulator :Vref_o

High performance operational amplifier (VCOM)

Integrated gate voltage shaping circuitry with adjustable turn on delay
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Built-in soft-start circuit independent of loads(Vs . programmable, Vlogic, VGL, VGH)

Excellent line regulation with the feed-forward method (Vlogic, Vs)

Built-in external p-channel gate control for Vs sequencing

Built-in sequence comparator for rising

Frequency setting by input pin: 500kHz / 750kHz

Package
: 48pin, QFN (7mm × 7mm × 0.8mm) Exposed PAD
■ APPLICATIONS

Large size LCD panel
■ FUNCTIONAL LABEL
April 2012
1/2
Copyright©2012 FUJITSU SEMICONDUCTOR LIMITED All rights reserved
VREF_FB
REF
FBN
GND
DRVN
SUPN
DRN
VGHM
VGH
FBP
DLY1
■ PIN ASSIGNMENTS
VREF_O
MB39A302
48
47
46
45
44
43
42
41
40
39
38
37
VREF_I 1
36 DRVP
VOP 2
35 OPGND
OGND 3
34 SUPP
OPP 4
33 THR
OPN 5
32 COMP
OPO 6
31 FB1
XAO 7
30 GD
GVOFF 8
28 PGND
16
17
18
19
20
21
GND
VDET
INVL
VL
22
23
24
SS
15
CLIM
14
FSEL
13
IN2
25 LX1
IN2
26 LX1
GND 12
BST
27 PGND
LX2
FB2 10
OUT 11
LX2
■ BLOCK DIAGRAM
29 GD_I
EN 9
■ ORDERING INFORMATION
Part number
Packege
Remark
MB39A302WQN
48-pin plastic QFN
(LCC-48P-M11)
0.5 mm-pin-pitch 7×7 mm
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The contents of this document are subject to change without notice.
April 2012
2/2
Copyright©2012 FUJITSU SEMICONDUCTOR LIMITED All rights reserved
NP405-00003-1v0-E
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