MB39A123 Datasheet, PDF (1/44 Pages) Fujitsu Component Limited. – 6 ch DC/DC Converter IC with Synchronous Rectification

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27257-1E
ASSP For Power Supply Applications
6 ch DC/DC Converter IC with
Synchronous Rectification
MB39A123
■ DESCRIPTION
MB39A123 is a 6-channel DC/DC converter IC using pulse width modulation (PWM) , and it is suitable for up
conversion, down conversion, and up/down conversion. MB39A123 is built in 6 channels into BCC-48++/LQFP-
48P package and this IC can control and soft-start at each channel. MB39A123 is suitable for power supply of
high performance potable instruments such as a digital still camera (DSC).
■ FEATURES
• Supports for step-down with synchronous rectification (ch.1)
• Supports for step-down and up/down Zeta conversion (ch.2 to ch.4)
• Supports for step-up and up/down Sepic conversion (ch.5, ch.6)
• Negative voltage output (Inverting amplifier) (ch.4)
• Low voltage start-up (ch.5, ch.6) : 1.7 V
• Power supply voltage range
: 2.5 V to 11 V
• Reference voltage
: 2.0 V ± 1%
• Error amplifier reference voltage : 1.0 V ± 1% (ch.1) , 1.23 V ± 1% (ch.2 to ch.6)
• Oscillation frequency range
: 200 kHz to 2.0 MHz
• Standby 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 packages (BCC-48 pin : 1 type, LQFP-48 pin : 1 type)
■ APPLICATIONS
• Digital still camera(DSC)
• Digital video camera(DVC)
• Surveillance camera
etc.
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