Datasheet Texas Instruments LM5121

ManufacturerTexas Instruments
SeriesLM5121
Datasheet Texas Instruments LM5121

3-65V Wide Vin, Current Mode Synchronous Boost with Disconnection Switch Control

Datasheets

LM5121/-Q1 Wide Input Synchronous Boost Controller with Disconnection Switch Control datasheet
PDF, 3.0 Mb, Revision: C, File published: Jun 14, 2016
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Prices

Status

LM5121MH/NOPBLM5121MHE/NOPBLM5121MHX/NOPB
Lifecycle StatusActive (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)
Manufacture's Sample AvailabilityYesNoNo

Packaging

LM5121MH/NOPBLM5121MHE/NOPBLM5121MHX/NOPB
N123
Pin202020
Package TypePWPPWPPWP
Industry STD TermHTSSOPHTSSOPHTSSOP
JEDEC CodeR-PDSO-GR-PDSO-GR-PDSO-G
Package QTY732502500
CarrierTUBESMALL T&RLARGE T&R
Device MarkingLM5121LM5121MH
Width (mm)4.44.44.4
Length (mm)6.56.56.5
Thickness (mm)111
Pitch (mm).65.65.65
Max Height (mm)1.21.21.2
Mechanical DataDownloadDownloadDownload

Parametrics

Parameters / ModelsLM5121MH/NOPB
LM5121MH/NOPB
LM5121MHE/NOPB
LM5121MHE/NOPB
LM5121MHX/NOPB
LM5121MHX/NOPB
Duty Cycle(Max), %100100100
Iout(Max), A202020
Iq(Typ), mA444
Operating Temperature Range, C-40 to 125-40 to 125-40 to 125
Package GroupHTSSOPHTSSOPHTSSOP
RatingCatalogCatalogCatalog
Regulated Outputs111
Special FeaturesAdjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO AdjustableAdjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO AdjustableAdjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO Adjustable
Switch Current Limit(Typ), A202020
Switching Frequency(Max), kHz100010001000
Switching Frequency(Min), kHz505050
TypeControllerControllerController
Vin(Max), V656565
Vin(Min), V333
Vout(Max), V100100100
Vout(Min), V333

Eco Plan

LM5121MH/NOPBLM5121MHE/NOPBLM5121MHX/NOPB
RoHSCompliantCompliantCompliant

Application Notes

  • Automated Frequency Response Analyzer
    PDF, 939 Kb, File published: Oct 9, 2013
    This application report discusses a new method of doing stability Analysis testing by using basic labequipment, while not requiring any specific instruments.
  • Designing the front-end DC/DC conversion stage to withstand automotive transient
    PDF, 336 Kb, File published: Jan 18, 2017
  • Practical Feedback Loop Analysis for Current-Mode Boost Converter
    PDF, 557 Kb, File published: Mar 7, 2014
  • Designing Fault Protection Circuits Using Wide VIN LM5121
    PDF, 186 Kb, File published: Jan 12, 2015
    Battery powered systems or systems with low input voltage supplies may have loads that require higher voltage outputs. A boost converter is a usual choice for non-isolated applications; however, boost converters do not naturally provide system protection to downstream circuitry due to the pass path from input to output. Problems due to this pass path are now resolved with the LM5121 boost controll

Model Line

Manufacturer's Classification

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