전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

LM5085MMX/NOPB 데이터시트(PDF) 21 Page - Texas Instruments

Click here to check the latest version.
부품명 LM5085MMX/NOPB
상세설명  75V Constant On-Time PFET Buck Switching Controller
PDF  33 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

LM5085MMX/NOPB 데이터시트(HTML) 21 Page - Texas Instruments

Back Button LM5085MMX/NOPB Datasheet HTML 17Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 18Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 19Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 20Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 21Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 22Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 23Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 24Page - Texas Instruments LM5085MMX/NOPB Datasheet HTML 25Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 33 page
background image
FB
LM5085
PGATE
GND
Q1
L1
COUT
RFB2
RFB1
VOUT
GND
D1
R4
R4 =
VRIP(min)
IOR(min)
FB
LM5085
PGATE
GND
Q1
L1
Cff
COUT
RFB2
RFB1
VOUT
GND
D1
R4
Cff =
3 x tON(max)
(RFB1//RFB2)
LM5085, LM5085-Q1
www.ti.com
SNVS565I – NOVEMBER 2008 – REVISED AUGUST 2015
Typical Application (continued)
(34)
where tON(max) is the maximum on-time, which occurs at minimum VIN. The next larger standard value capacitor
should be used for Cff.
Figure 27. Reduced Ripple Configuration
b) Lowest cost configuration: This configuration, shown in Figure 28, is the same as Figure 27 except Cff is
removed. Since the ripple voltage at VOUT is attenuated by RFB2 and RFB1, the minimum ripple required at VOUT is
equal to:
VRIP(min) = 25mV x (RFB2 + RFB1)/RFB1
(35)
The minimum value for R4 is calculated from:
(36)
where IOR(min) is the minimum ripple current, which occurs at minimum input voltage.
Figure 28. Lowest Cost Ripple Generating Configuration
Copyright © 2008–2015, Texas Instruments Incorporated
Submit Documentation Feedback
21
Product Folder Links: LM5085 LM5085-Q1



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33


데이터시트 다운로드

Go To PDF Page


링크 URL



ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com