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LM3481 Datasheet High Efficiency Low-Side N-Channel Controller

Manufacturer: National Semiconductor (now Texas Instruments)

General Description

The LM3481 is a versatile Low-Side N-FET high performance controller for switching regulators.

It is suitable for use in topologies requiring a low-side FET, such as boost, flyback, SEPIC, etc.

The LM3481 can be operated at extremely high switching frequencies in order to reduce the overall solution www.DataSheet4U.com size.

Overview

LM3481 High Efficiency Low-Side N-Channel Controller for Switching Regulators November 16, 2007 LM3481 High Efficiency Low-Side N-Channel Controller for Switching.

Key Features

  • such as thermal shutdown, short-circuit protection and over voltage protection. Power saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up. Key Specifications.
  • Wide supply voltage range of 2.97V to 48V.
  • 100 kHz to 1 MHz Adjustable and Synchronizable clock frequency.
  • ±1.5% (over temperature) internal reference.
  • 10 µA shutdown current (over temperature) Features.