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MB3878 - DC/DC Converter

Description

The MB3878 is a DC/DC converter IC suitable for down-conversion, using pulse-width (PWM) charging and enabling output voltage to be set to any desired level from one cell to four cells.

Features

  • Detecting a voltage drop in the AC adaptor and dynamically controlling the charge current (Dynamically-controlled charging).
  • Output voltage setting using external resistor : 1 cell to 4 cells.
  • High efficiency : 94 %.
  • Wide range of operating supply voltages : 7 V to 25 V.
  • Output voltage setting accuracy : 4.2V ± 0.8% (per cell).
  • Built-in frequency setting capacitor enables frequency setting using external resistor only.
  • Oscillator fr.

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Datasheet preview – MB3878

Datasheet Details

Part number MB3878
Manufacturer Fujitsu Media Devices
File Size 283.31 KB
Description DC/DC Converter
Datasheet download datasheet MB3878 Datasheet
Additional preview pages of the MB3878 datasheet.

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Full PDF Text Transcription

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FUJITSU SEMICONDUCTOR DATA SHEET DS04-27706-1E ASSP For Power Supply Applications (Secondary battery) DC/DC Converter IC for Charging MB3878 s DESCRIPTION The MB3878 is a DC/DC converter IC suitable for down-conversion, using pulse-width (PWM) charging and enabling output voltage to be set to any desired level from one cell to four cells. These ICs can dynamically control the secondary battery’s charge current by detecting a voltage drop in an AC adaptor in order to keep its power constant (dynamically-controlled charging). The charging method enables quick charging, for example, with the AC adaptor during operation of a notebook PC.
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