Spansion
®
Analog and Microcontroller
Products
The following document contains information on Spansion analog and microcontroller products. Although the
document is marked with the name “Fujitsu”, the company that originally developed the specification, Spansion
will continue to offer these products to new and existing customers.
Continuity of Specifications
There is no change to this document as a result of offering the device as a Spansion product. Any changes that
have been made are the result of normal document improvements and are noted in the document revision
summary, where supported. Future routine revisions will occur when appropriate, and changes will be noted in a
revision summary.
Continuity of Ordering Part Numbers
Spansion continues to support existing part numbers beginning with “MB”. To order these products, please use
only the Ordering Part Numbers listed in this document.
For More Information
Please contact your local sales office for additional information about Spansion memory, analog, and
microcontroller products and solutions.
FUJITSU MICROELECTRONICS
DATA SHEET
DS04-27230-3Ea
ASSP For Power Manegement Applications
(DC/DC Converter for DSC/Camcorder)
4-ch DC/DC Converter IC
for low voltage
MB39A103
■
DESCRIPTION
The MB39A103 is a 4-channel DC/DC converter IC using pulse width modulation (PWM). This IC is ideal for up
conversion, down conversion, and up/down conversion.
Achievement of low voltage start-up (1.7 V or more) enables operation from low voltage.
4ch is built in TSSOP-30P/package. Each channel can be controlled, and soft-start.
This is an ideal power supply for high-performance portable devices such as digital still cameras.
This product is covered by US Patent Number 6,147,477.
■
FEATURES
•
•
•
•
•
•
•
•
•
•
Supports for down-conversion and up/down Zeta conversion (CH1)
Supports for up-conversion and up/down Sepic conversion (CH2 to CH4)
Low voltage start-up (CH4): 1.7 V
Power supply voltage range : 2.5 V to 11 V
Reference voltage : 2.0 V
±
1
%
Error amplifier threshold voltage : 1.24 V
±
1.5
%
Built-in totem-pole type output for MOS FET
Built-in soft-start circuit independent of loads
High-frequency operation capability: 1.5 MHz (Max)
External short-circuit detection capability by
−INS
terminal
■
PACKAGES
30-pin plastic TSSOP
32-pad plastic BCC
(FPT-30P-M04)
(LCC-32P-M15)
Copyright©2005-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved
2005.11
MB39A103
■
PIN ASSIGNMENTS
(TOP VIEW)
CS2
−INE2
FB2
DTC2
VCC
CTL
VREF
RT
CT
GND
CSCP
DTC3
FB3
−INE3
CS3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CS1
−INE1
FB1
DTC1
VCCO
OUT1
OUT2
OUT3
OUT4
GNDO
−INS
DTC4
FB4
−INE4
CS4
(FPT-30P-M04)
(Continued)
2
MB39A103
(Continued)
(TOP VIEW)
(Penetration diagram from surface)
−INE2
DTC2
−INE1
CS2
CS1
FB2
N.C.
1
32
31
30
29
28
27
26
FB1
25
DTC1
VCC
2
24
VCCO
CTL
3
23
OUT1
VREF
4
22
OUT2
RT
5
21
OUT3
CT
6
20
OUT4
GND
7
19
GNDO
−INS
CSCP
8
18
N.C.
9
10
11
12
13
14
15
16
17
DTC4
−INE3
−INE4
DTC3
FB3
CS3
CS4
(LCC-32P-M15)
FB4
3
MB39A103
■
PIN DESCRIPTION
Block
Pin No.
TSSOP
27
28
CH1
29
30
25
4
3
CH2
2
1
24
12
13
CH3
14
15
23
19
18
CH4
17
16
22
9
OSC
8
6
Control
11
20
26
5
Power
7
21
10
5
3
8
18
24
2
4
19
7
RT
CTL
CSCP
−INS
VCCO
VCC
VREF
GNDO
GND
I
I
O
BCC
25
26
27
28
23
32
31
30
29
22
10
11
12
13
21
17
16
15
14
20
6
Symbol
DTC1
FB1
−INE1
CS1
OUT1
DTC2
FB2
−INE2
CS2
OUT2
DTC3
FB3
−INE3
CS3
OUT3
DTC4
FB4
−INE4
CS4
OUT4
CT
I/O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
Descriptions
Dead time control terminal
Error amplifier output terminal
Error amplifier inverted input terminal
Soft
-
start setting capacitor connection terminal
Totem pole type output terminal
Dead time control terminal
Error amplifier output terminal
Error amplifier inverted input terminal
Soft
-
start setting capacitor connection terminal
Totem pole type output terminal
Dead time control terminal
Error amplifier output terminal
Error amplifier inverted input terminal
Soft
-
start setting capacitor connection terminal
Totem pole type output terminal
Dead time control terminal
Error amplifier output terminal
Error amplifier inverted input terminal
Soft
-
start setting capacitor connection terminal
Totem pole type output terminal
Triangular wave frequency setting capacitor
connection terminal
Triangular wave frequency setting resistor
connection terminal
Power supply control terminal
Short-circuit detection circuit capacitor connection
terminal
Short-circuit detection comparator inverted input
terminal
Output block power supply terminal
Power supply terminal
Reference voltage output terminal
Output block ground terminal
Ground terminal
4
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