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MB3889 Datasheet 2-Channel DC/DC Converter IC

Manufacturer: Fujitsu Semiconductor Limited

Overview: www.DataSheet4U.com FUJITSU SEMICONDUCTOR DATA SHEET DS04-27229-2E ASSP For Power Supply Applications (General Purpose DC/DC Converter) 2-Channel DC/DC Converter IC with Overcurrent Protection Symmetrical-Phase Type.

General Description

The MB3889 is a symmetrical-phase type of two-channel, DC/DC converter IC using pulse width modulation (PWM) , incorporating an overcurrent protection circuit (requiring no current sense resistor) and an overvoltage protection circuit.

Providing high output driving capabilities, the MB3889 is suitable for down-conversion.

The MB3889 adopts both synchronous rectification to provide high efficiency and symmetrical phasing (two antiphase triangular waves) which contributes to making the input capacitor small.

Key Features

  • which output the protection status upon detection of an overvoltage or overcurrent while reducing the number of external protective devices required. The result is an ideal built-in power supply for driving products with high speed CPU’s such as home TV game devices and notebook PC’s. This product is covered by US Patent Number 6,147,477. s.