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 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 - 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