FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27230-3E
ASSP For Power Manegement Applications
(DC/DC Converter for DSC/Camcorder)
4-ch DC/DC Converter IC
for low voltage
MB39A103
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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.
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FEATURES
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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
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PACKAGES
30-pin plastic TSSOP
32-pad plastic BCC
(FPT-30P-M04)
(LCC-32P-M15)
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
