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Datasheet Texas Instruments LM3481MM/NOPB

Datasheet Texas Instruments LM3481MM/NOPB

ManufacturerTexas Instruments
Part NumberLM3481MM/NOPB

High-Efficiency Controller for Boost, SEPIC and Flyback DC-DC Converters 10-VSSOP -40 to 125




Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes


Package TypeDGS
Industry STD TermVSSOP
Package QTY1000
CarrierSMALL T&R
Device MarkingSJPB
Width (mm)3
Length (mm)3
Thickness (mm)1.02
Pitch (mm).5
Max Height (mm)1.07
Mechanical DataDownload »


Approx. Price (US$)0.80 | 1ku
Duty Cycle(Max)(%)85
Operating Temperature Range(C)-40 to 125
Package GroupVSSOP
Regulated Outputs(#)1
Special FeaturesAdjustable Current Limit
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
UVLO Adjustable
Switch Current Limit(Typ)(A)10
Switching Frequency(Max)(kHz)1000
Switching Frequency(Min)(kHz)100

Eco Plan

Pb FreeYes

Design Kits & Evaluation Modules

  • Evaluation Modules & Boards: LM3481EVAL
    High Efficiency Boost Switching Controller Eval Board with 12 Volt Output
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: LM3481SEPICEVAL
    LM3481 SEPIC Evaluation Board
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: LM3481-FLYBACKEVM
    Isolated Flyback Topology Evaluation Module for LM3481 Boost Controller
    Lifecycle Status: Active (Recommended for new designs)

Application Notes

  • Download » Application Notes, PDF, 337 Kb, 07-24-2015
    Softstart Using Constant Current Constant Voltage Approach
    In many systems backup power is provided either by batteries or simply by a large value capacitor. Inthese applications the capacitor would only provide the current when the primary power source fails.Further, these applications are usually for light load currents. During normal operation the backupcapacitors are kept charged up by a DC/DC converter. The challenge involved in an application
  • Download » Application Notes, PDF, 782 Kb, 07-11-2014
    Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co
  • Download » Application Notes, PDF, 356 Kb, Revision: C, 04-23-2013
    AN-1286 Compensation For The LM3478 Boost Controller (Rev. C)
    The LM3478 is a low side N-Channel controller for switching regulators. Like many switching controllers,the added flexibility in component selection can cause problems for users when determining thecompensation scheme. It is the goal of this application report to present a decent groundwork to allow thereader to select with confidence the correct compensation components. To achieve this we l
  • Download » Application Notes, PDF, 220 Kb, Revision: E, 04-23-2013
    AN-1484 Designing A SEPIC Converter (Rev. E)
    In a single ended primary inductance converter (SEPIC) design, the output voltage can be higher or lowerthan the input voltage. The SEPIC converter shown in Figure 1 uses two inductors: L1 and L2. The twoinductors can be wound on the same core since the same voltages are applied to them throughout theswitching cycle.
  • Download » Application Notes, PDF, 316 Kb, Revision: B, 04-23-2013
    Modeling & Design of Current Mode Control Boost Converters (Rev. B)
    This application note presents a detail modeling and design of current mode control boost convertersoperating in the continuous conduction mode (CCM). Based on the derived small signal models, thedesign of a lag compensator for current mode control boost converters will be detailed. The LM3478 boostcontroller will be used in the example. Simulation and hardware measurement of frequency respo
  • Download » Application Notes, PDF, 247 Kb, Revision: A, 04-23-2013
    AN-1990 Compensation for Current Mode Control SEPIC Converters (Rev. A)
    This application note discusses the use of SEPIC converters in various applications.
  • Download » Application Notes, PDF, 1.7 Mb, 09-21-2016
    LM34xx How to Design Flyback Converter with LM3481 Boost Controller
    The TexasInstrumentsLM3481boostcontrolleris a versatilelow-sideN-FEThigh-performancecontrollerfor switchingregulators.Thedevicehaswiderangeof applicationssuchas automotivestart-stopapplication,one-cellor two-cellLi-ionbattery-poweredportableBluetoothaudiosystem,industrialsystemisolatedsupplies,and so forth,and supportstopologi

Moldel Line

Series: LM3481 (2)

Manufacturer's Classification

  • Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Up (Boost) > Boost Controller (External Switch)
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