MB3883

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27225-2E ASSP For Power Management Applications 6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down MB3883 s DESCRIPTION The MB3883 is a 6-channel step-up/step-down DC/DC converter IC using pulse width modulation (PWM) and synchronous rectification, designed for low voltage, high efficiency, and compact size. This IC is ideal for up conversion, down conversion, and up/down conversion (using a step-up/step-down Zeta system with free input and output settings). The MB3883 can operate at low voltage levels, and has a wide supply voltage range from 1.7 V to 9 V. The MB3883 is available in two packages, an LQFP-48P or a leadless BCC-48P formed with a contact electrode pad only. This is an ideal power supply for high-performance portable devices such as digital still cameras. s FEATURES Supports synchronous rectification (CH1, 2, 5) Supports for down-conversion and up/down Zeta conversion (CH1, 2) Supports for up-conversion (CH5) Supports up-conversion (CH3, 4, 6) Low start-up voltage : 1.7 V (CH6) Power supply voltage range : 2.4 V to 9 V (CH6) : 3.6 V to 9 V (CH1 to CH5) Built-in high-precision reference voltage circuit : ±1 % Wide operating oscillator frequency range with high-frequency capability : 100 kHz to 1 MHz Error amplifier output for soft start (CH1 to CH6) Totem-pole type output switch control circuit s PACKAGES 48-pin plastic LQFP 48-pad plastic BCC (FPT-48P-M05) (LCC-48P-...