Datasheet Texas Instruments LM1771UMM/NOPB — Datenblatt

HerstellerTexas Instruments
SerieLM1771
ArtikelnummerLM1771UMM/NOPB
Datasheet Texas Instruments LM1771UMM/NOPB

Niederspannungs-Synchron-Buck-Controller mit Präzisionsaktivierung und ohne externe Kompensation 8-VSSOP

Datenblätter

LM1771 Low-Voltage Synchronous Buck Controller With Precision Enable and No External Compensation datasheet
PDF, 1.3 Mb, Revision: D, Datei veröffentlicht: Jan 8, 2016
Auszug aus dem Dokument

Preise

Status

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

Verpackung

Pin8
Package TypeDGK
Industry STD TermVSSOP
JEDEC CodeR-PDSO-G
Package QTY1000
CarrierSMALL T&R
Device MarkingSNTB
Width (mm)3
Length (mm)3
Thickness (mm).97
Pitch (mm).65
Max Height (mm)1.07
Mechanical DataHerunterladen

Parameter

Control ModeConstant on-time (COT)
Duty Cycle(Max)98 %
Iout(Max)6 A
Iq(Typ)0.4 mA
Number of Phases1
Operating Temperature Range-40 to 125 C
Package GroupVSSOP
RatingCatalog
Regulated Outputs1
Special FeaturesEnable
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: LM1771EVAL
    Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation
    Lifecycle Status: Active (Recommended for new designs)

Anwendungshinweise

  • LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A)
    PDF, 103 Kb, Revision: A, Datei veröffentlicht: May 5, 2013
    This application note discusses the Virtex-5 FPGA power supply prerequisites in terms of the multiplevoltage rail and current level requirements, output sequencing, and startup characteristics.
  • 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)