Datasheet Texas Instruments LM1771UMM/NOPB — 数据表

制造商Texas Instruments
系列LM1771
零件号LM1771UMM/NOPB
Datasheet Texas Instruments LM1771UMM/NOPB

具有精密使能且无外部补偿的低压同步降压控制器8-VSSOP

数据表

LM1771 Low-Voltage Synchronous Buck Controller With Precision Enable and No External Compensation datasheet
PDF, 1.3 Mb, 修订版: D, 档案已发布: Jan 8, 2016
从文件中提取

价格

状态

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

打包

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 Data下载

参数化

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

生态计划

RoHSCompliant

设计套件和评估模块

  • Evaluation Modules & Boards: LM1771EVAL
    Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation
    Lifecycle Status: Active (Recommended for new designs)

应用须知

  • LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A)
    PDF, 103 Kb, 修订版: A, 档案已发布: 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, 修订版: A, 档案已发布: 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

模型线

制造商分类

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