MB39A108. 39A108 Datasheet

39A108 Datasheet PDF


Part

39A108

Description

MB39A108

Manufacture

Fujitsu Media Devices

Page 30 Pages
Datasheet
Download 39A108 Datasheet


39A108 Datasheet
FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27237-2E
ASSP for Power Supply Applications
(DC/DC converter for DSC/camcorder)
5 ch DC/DC Converter IC with
Synchronous Rectification
MB39A108
DESCRIPTION
The MB39A108 is 5-channel DC/DC converter IC using pulse width modulation (PWM), and is suitable for up
conversion, down conversion, and up/down conversion. The MB39A108 is built in 5 channels into TSSOP-38P/
BCC-40P package and operates at 2 MHz maximum. Each channel can be controlled with soft-start.
The MB39A108 is suitable for power supply of high performance portable instruments such as DSC.
FEATURES
• Supports for down-conversion with synchronous rectification (CH1)
• Supports for down-conversion and up/down Zeta conversion (CH2, CH3)
• Supports for up-conversion and up/down Sepic conversion (CH4, CH5)
• Low voltage start-up (CH4, CH5) : 1.7 V
• Power supply voltage range : 2.5 V to 11 V
• Reference voltage : 2.0 V ± 1%
• Error amplifier threshold voltage : 1.00 V ± 1% (CH1), 1.23 V ± 1% (CH2 to CH5)
• Oscillation frequency range : 200 kHz to 2.0 MHz
www.DataSheeSt4taUn.cdobmy current : 0 µA (Typ)
• Built-in soft-start circuit independent of loads
• Built-in totem-pole type output for MOS FET
• Short-circuit detection capability by external signal ( INS terminal)
• Two types of package (TSSOP-38 pin : 1 type, BCC-40 pin : 1 type)
APPLICATIONS
• Digital still camera (DSC)
• Digital video camera (DVC)
• Surveillance camera
etc.
Copyright©2005-2006 FUJITSU LIMITED All rights reserved

39A108 Datasheet
MB39A108
PIN ASSIGNMENT
www.DataSheet4U.com
CS2
INE2
FB2
DTC2
VCC
CTL
CTL3
CTL4
CTL5
INS
VREF
RT
CT
GND
CSCP
DTC3
FB3
INE3
CS3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
(TOP VIEW)
(FPT-38P-M03)
38 CS1
37 INE1
36 FB1
35 VCCO
34 OUT1-1
33 OUT1-2
32 OUT2
31 OUT3
30 OUT4
29 OUT5
28 GNDO
27 CS5
26 INE5
25 FB5
24 DTC5
23 DTC4
22 FB4
21 INE4
20 CS4
(Continued)
2


Features Datasheet pdf FUJITSU SEMICONDUCTOR DATA SHEET DS04-2 7237-2E ASSP for Power Supply Applicat ions (DC/DC converter for DSC/camcorder ) 5 ch DC/DC Converter IC with Synchro nous Rectification MB39A108 ■ DESCRI PTION The MB39A108 is 5-channel DC/DC c onverter IC using pulse width modulatio n (PWM), and is suitable for up convers ion, down conversion, and up/down conve rsion. The MB39A108 is built in 5 chann els into TSSOP-38P/ BCC-40P package and operates at 2 MHz maximum. Each channe l can be controlled with soft-start. Th e MB39A108 is suitable for power supply of high performance portable instrumen ts such as DSC. ■ FEATURES • Suppo rts for down-conversion with synchronou s rectification (CH1) • Supports for down-conversion and up/down Zeta conver sion (CH2, CH3) • Supports for up-con version and up/down Sepic conversion (C H4, CH5) • Low voltage start-up (CH4, CH5) : 1.7 V • Power supply voltage range : 2.5 V to 11 V • Reference vol tage : 2.0 V ± 1% • Error amplifier threshold voltage : 1.00 V ± 1% (CH1), 1.23.
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