Datasheet Texas Instruments LM34925

ManufacturerTexas Instruments
SeriesLM34925
Datasheet Texas Instruments LM34925

7.5-100V Wide Vin, 100mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters

Datasheets

LM34925 Integrated Secondary-Side Bias Regulator for Isolated DC-DC Converters datasheet
PDF, 1.3 Mb, Revision: F, File published: Nov 11, 2014
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Prices

Status

LM34925MR/NOPBLM34925MRX/NOPBLM34925SD/NOPBLM34925SDX/NOPB
Lifecycle StatusActive (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)
Manufacture's Sample AvailabilityYesNoYesNo

Packaging

LM34925MR/NOPBLM34925MRX/NOPBLM34925SD/NOPBLM34925SDX/NOPB
N1234
Pin8888
Package TypeDDADDANGUNGU
Industry STD TermHSOICHSOICWSONWSON
JEDEC CodeR-PDSO-GR-PDSO-GS-PDSO-NS-PDSO-N
Package QTY95250010004500
CarrierTUBELARGE T&RSMALL T&RLARGE T&R
Device MarkingS000YBS000YBL34925L34925
Width (mm)3.93.944
Length (mm)4.894.8944
Thickness (mm)1.481.48.8.8
Pitch (mm)1.271.27.8.8
Max Height (mm)1.71.7.8.8
Mechanical DataDownloadDownloadDownloadDownload

Parametrics

Parameters / ModelsLM34925MR/NOPB
LM34925MR/NOPB
LM34925MRX/NOPB
LM34925MRX/NOPB
LM34925SD/NOPB
LM34925SD/NOPB
LM34925SDX/NOPB
LM34925SDX/NOPB
Iout, A0.10.10.10.1
Package GroupSO PowerPADSO PowerPADWSONWSON
Package Size: mm2:W x L, PKG8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)See datasheet (WSON)See datasheet (WSON)
RatingCatalogCatalogCatalogCatalog
Soft StartNoneNoneNoneNone
Special FeaturesAdjustable UVLO,EnableAdjustable UVLO,EnableAdjustable UVLO,EnableAdjustable UVLO,Enable
Switching Frequency(Max), kHz1000100010001000
Switching Frequency(Min), kHz150150150150
TopologyBuck,FlybuckBuck,FlybuckBuck,FlybuckBuck,Flybuck
TypeConverter (Integrated Switch)Converter (Integrated Switch)Converter (Integrated Switch)Converter (Integrated Switch)
Vin(Max), V100100100100
Vin(Min), V9999
Vout(Max), V90909090
Vout(Min), V1.251.251.251.25

Eco Plan

LM34925MR/NOPBLM34925MRX/NOPBLM34925SD/NOPBLM34925SDX/NOPB
RoHSCompliantCompliantCompliantCompliant

Application Notes

  • LM34925 Isolated Evaluation Board (Rev. A)
    PDF, 516 Kb, Revision: A, File published: Apr 23, 2013
    An isolated bias supply is implemented in this evaluation board with LM34925 Constant-On-Timeregulator. The LM34925 regulator integrates both the high and low side power switches essential forcreating isolated buck converter.The following include the board specifications:Input Range: 20V to 100VPrimary Output Voltage: 10VSecondary (Isolated) Output Voltage:
  • Fly-Buck(TM) converter provides EMC and isolation in PLC applications
    PDF, 201 Kb, File published: Jan 29, 2015
  • AN-2292 Designing an Isolated Buck (Fly-Buck) Converter (Rev. C)
    PDF, 870 Kb, Revision: C, File published: Dec 17, 2014
    In many applications, one or more low-cost, simple to use, isolated power supplies working from input voltages up to 100 V are needed. Traditional solutions use flyback converters to generate this bias supply. Flyback designs typically utilize asymmetric transformers turns ratios for primary and secondary power windings, with an optocoupler and reference, or an auxiliary winding for feedback regul

Model Line

Manufacturer's Classification

  • Semiconductors> Power Management> Offline and Isolated DC/DC Controllers and Converters> Isolated DC/DC Converter
EMS supplier