Datasheet Texas Instruments LM1771 — Ficha de datos

FabricanteTexas Instruments
SerieLM1771
Datasheet Texas Instruments LM1771

Controlador Buck síncrono de bajo voltaje con activación de precisión y sin compensación externa

Hojas de datos

LM1771 Low-Voltage Synchronous Buck Controller With Precision Enable and No External Compensation datasheet
PDF, 1.3 Mb, Revisión: D, Archivo publicado: enero 8, 2016
Extracto del documento

Precios

Estado

LM1771SMM/NOPBLM1771SSD/NOPBLM1771TMM/NOPBLM1771TSD/NOPBLM1771UMM/NOPBLM1771USD/NOPB
Estado del ciclo de vidaActivo (Recomendado para nuevos diseños)Activo (Recomendado para nuevos diseños)Activo (Recomendado para nuevos diseños)Activo (Recomendado para nuevos diseños)Activo (Recomendado para nuevos diseños)Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricanteNo

Embalaje

LM1771SMM/NOPBLM1771SSD/NOPBLM1771TMM/NOPBLM1771TSD/NOPBLM1771UMM/NOPBLM1771USD/NOPB
N123456
Pin868686
Package TypeDGKNGGDGKNGGDGKNGG
Industry STD TermVSSOPWSONVSSOPWSONVSSOPWSON
JEDEC CodeR-PDSO-GS-PDSO-NR-PDSO-GS-PDSO-NR-PDSO-GS-PDSO-N
Package QTY100010001000100010001000
CarrierSMALL T&RSMALL T&RSMALL T&RSMALL T&RSMALL T&RSMALL T&R
Device MarkingSNRB1771SSNSB1771TSNTB1771U
Width (mm)333333
Length (mm)333333
Thickness (mm).97.8.97.8.97.8
Pitch (mm).65.95.65.95.65.95
Max Height (mm)1.07.81.07.81.07.8
Mechanical DataDescargarDescargarDescargarDescargarDescargarDescargar

Paramétricos

Parameters / ModelsLM1771SMM/NOPB
LM1771SMM/NOPB
LM1771SSD/NOPB
LM1771SSD/NOPB
LM1771TMM/NOPB
LM1771TMM/NOPB
LM1771TSD/NOPB
LM1771TSD/NOPB
LM1771UMM/NOPB
LM1771UMM/NOPB
LM1771USD/NOPB
LM1771USD/NOPB
Control ModeConstant on-time (COT)Constant on-time (COT)Constant on-time (COT)Constant on-time (COT)Constant on-time (COT)Constant on-time (COT)
Duty Cycle(Max), %989898989898
Iout(Max), A666666
Iq(Typ), mA0.40.40.40.40.40.4
Number of Phases111111
Operating Temperature Range, C-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125
Package GroupVSSOPWSONVSSOPWSONVSSOPWSON
RatingCatalogCatalogCatalogCatalogCatalogCatalog
Regulated Outputs111111
Special FeaturesEnableEnableEnableEnableEnableEnable
Switching Frequency(Max), kHz200020002000200020002000
Switching Frequency(Min), kHz500500500500500500
TypeControllerControllerControllerControllerControllerController
Vin(Max), V5.55.55.55.55.55.5
Vin(Min), V2.82.82.82.82.82.8
Vout(Max), V4.54.54.54.54.54.5
Vout(Min), V0.80.80.80.80.80.8

Plan ecológico

LM1771SMM/NOPBLM1771SSD/NOPBLM1771TMM/NOPBLM1771TSD/NOPBLM1771UMM/NOPBLM1771USD/NOPB
RoHSObedienteObedienteObedienteObedienteObedienteObediente

Notas de aplicación

  • LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A)
    PDF, 103 Kb, Revisión: A, Archivo publicado: mayo 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, Revisión: A, Archivo publicado: abr 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

Linea modelo

Clasificación del fabricante

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