Datasheet Texas Instruments LM1770UMF/NOPB — Datenblatt

HerstellerTexas Instruments
SerieLM1770
ArtikelnummerLM1770UMF/NOPB
Datasheet Texas Instruments LM1770UMF/NOPB

Niederspannungs-SOT23-Synchron-Buck-Controller ohne externe Kompensation 5-SOT-23 -40 bis 125

Datenblätter

LM1770 Low-V SOT23 Synch Buck Cntrr w/No Ext Compensation datasheet
PDF, 862 Kb, Revision: C, Datei veröffentlicht: Apr 3, 2013
Auszug aus dem Dokument

Preise

Status

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

Verpackung

Pin5
Package TypeDBV
Industry STD TermSOT-23
JEDEC CodeR-PDSO-G
Package QTY1000
CarrierLARGE T&R
Device MarkingSKLB
Width (mm)1.6
Length (mm)2.9
Thickness (mm)1.2
Pitch (mm).95
Max Height (mm)1.45
Mechanical DataHerunterladen

Parameter

Control ModeConstant on-time (COT)
Duty Cycle(Max)98 %
Iout(Max)4 A
Iq(Typ)0.4 mA
Number of Phases1
Operating Temperature Range-40 to 125 C
Package GroupSOT-23
RatingCatalog
Regulated Outputs1
Special FeaturesLight Load Efficiency
Switching Frequency(Max)2000 kHz
Switching Frequency(Min)500 kHz
TypeController
Vin(Max)5.5 V
Vin(Min)2.8 V
Vout(Max)4.5 V
Vout(Min)0.8 V

Öko-Plan

RoHSCompliant

Design Kits und Evaluierungsmodule

  • Evaluation Modules & Boards: LM1770EVAL
    Low-Voltage SOT23 Synchronous Buck Controller With No External Compensation
    Lifecycle Status: Active (Recommended for new designs)

Anwendungshinweise

  • AN-1414 LM1770 Design Reference (Rev. A)
    PDF, 226 Kb, Revision: A, Datei veröffentlicht: Apr 23, 2013
    This application report presents several reference designs that can be used to implement the TexasInstruments LM1770 Synchronous Buck Controller in a wide variety of configurations.
  • Advanced Topics in Powering FPGAs
    PDF, 645 Kb, Datei veröffentlicht: Mar 22, 2007
  • Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A)
    PDF, 178 Kb, Revision: A, Datei veröffentlicht: Apr 23, 2013
    Of all the voltage regulator control strategies ever devised, the hysteretic regulator is probably about thesimplest. This control methodology simply turns a switch on when the output voltage is below a referenceand turns the switch off when the output rises to a slightly higher reference. The output ripple is thereforea direct function of the difference between the upper and lower reference

Modellreihe

Herstellerklassifikation

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