MB39A123

www.DataSheet4U.com 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++/LQFP48P 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. Copyright©2006 FUJITSU LIMITED Al...