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LM3481 Datasheet

Part Number LM3481
Manufacturers National Semiconductor
Logo National Semiconductor
Description High Efficiency Low-Side N-Channel Controller
Datasheet LM3481 DatasheetLM3481 Datasheet (PDF)

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

  LM3481   LM3481






Part Number LM3481
Manufacturers Texas Instruments
Logo Texas Instruments
Description High-Efficiency Controller
Datasheet LM3481 DatasheetLM3481 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3481, LM3481-Q1 SNVS346F – NOVEMBER 2007 – REVISED NOVEMBER 2014 LM3481 / -Q1 High-Efficiency Controller for Boost, SEPIC and Flyback DC-DC Converters 1 Features •1 LM3481QMM are Automotive-Grade Products That are AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature) • 10-Lead VSSOP Package • Internal Push-Pull Driver With 1-A Peak Current Capability • Current Limit and Thermal Shut.

  LM3481   LM3481







High Efficiency Low-Side N-Channel Controller

LM3481 High Efficiency Low-Side N-Channel Controller for Switching Regulators November 16, 2007 LM3481 High Efficiency Low-Side N-Channel Controller for Switching Regulators 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. The switching frequency of the LM3481 can be adjusted to any value between 100 kHz and 1 MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response in addition to cycle-by-cycle current limiting. Current limit can be programmed with a single external resistor. The LM3481 has built in protection 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 ■ ■ ■ ■ ■ ■ ■ ■ 10-lead MSOP package Internal push-pull driver with 1A peak current capability Current.


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