MB39A115 Datasheet, PDF (1/42 Pages) Fujitsu Component Limited. – 5 ch DC/DC Converter IC with Synchronous Rectification

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27242-1E
ASSP For Power Supply Applications
5 ch DC/DC Converter IC with
Synchronous Rectification
MB39A115
■ DESCRIPTION
The MB39A115 is a 5-channel DC/DC converter IC using pulse width modulation (PWM) , and the MB39A115 is
suitable for up conversion, down conversion, and up/down converstion. The MB39A115 is built in 5 channels into
TSSOP-38P/BCC-40P package and operates at 2 MHz maximum and, this IC can control and soft-start at each
channel. The MB39A115 is suitable for power supply of high performance potable instruments such as a digital
still camera (DSC).
■ FEATURES
• Supports for down-conversion with synchronous rectification (ch.1)
• Supports for down-conversion and up/down Zeta conversion (ch.2 to ch.4)
• Supports for up-conversion and up/down Sepic conversion (ch.5)
• Low voltage start-up (ch.5) : 1.7 V
• Power supply voltage range : 2.5 V to 11 V
• Reference voltage
: 2.0 V ± 1%
• Error amplifier threshold voltage : 1.0 V ± 1% (ch.1) , 1.23 V ± 1% (ch.2 to ch.5)
• 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)
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