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  4. High efficiency flyback/boost controller MP3900 (Monolithic Power Systems, Inc.)
High efficiency flyback/boost controller MP3900-MP3900
High efficiency flyback/boost controller MP3900-Monolithic Power Systems, Inc.

High efficiency flyback/boost controller MP3900
Monolithic Power Systems, Inc.

About This Product

■Summary

The MP3900 is a boost controller that drives an external MOSFET that can handle 10A of current. Operating current is typically 180 µA for offline, telecommunications, and non-isolated applications. Internal undervoltage lockout, slope compensation, and peak current limiting are all provided to minimize external component count. For boost applications with output voltages less than 30V, the current sense pin can be connected directly to the drain of an external switch. This eliminates the need for additional current sensing elements and the associated efficiency loss. The MP3900 is designed for boost applications, but can also be used in other topologies such as forward, flyback, and SEPIC. The 10V gate driver voltage minimizes external MOSFET power dissipation while allowing the use of devices with a variety of standard thresholds. The MP3900 is available in 8-pin MSOP and SOIC packages.

■Features and benefits

・Current mode control ・10V MOSFET gate driver ・Low voltage malfunction prevention function ・Internal soft start ・Current limit per cycle ・Slope current compensation ・Lossless current detection (VISENSE<30V) ・10μ shutdown current ・180µA quiescent current ・330kHz fixed frequency operation -Applicable to boost, SEPIC, flyback, and forward topologies ・Available in 8-pin MSOP/SOIC package

■Available product numbers

・MP3900DK-LF-P MP3900DK-LF-Z ・Part numbers ending in P and Z are the same part. P and Z indicate reel size only

  • Product

    High efficiency flyback/boost controller MP3900

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1 Models of High efficiency flyback/boost controller MP3900

Image Part Number Price (excluding tax) Iq (typ) (mA) Max Duty Cycle (%) P.G. Regulated Outputs SS Special Features Vfb (V) Grade Package (mm) Input voltage (max) (V) Input voltage (min) (V)
High efficiency flyback/boost controller MP3900-Part Number-MP3900

MP3900

Available upon quote

0.18

0.83

No

1

Internal

Under-Voltage Lockout (UVLO)

0.816

Catalog

MSOP-8, SOIC-8

12

8.6

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About Company Handling This Product

Monolithic Power Systems, Inc.

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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