전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

L99LD01 데이터시트(PDF) 29 Page - STMicroelectronics

부품명 L99LD01
상세설명  High efficiency constant current LED driver for automotive applications
PDF  69 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD01 데이터시트(HTML) 29 Page - STMicroelectronics

Back Button L99LD01 Datasheet HTML 25Page - STMicroelectronics L99LD01 Datasheet HTML 26Page - STMicroelectronics L99LD01 Datasheet HTML 27Page - STMicroelectronics L99LD01 Datasheet HTML 28Page - STMicroelectronics L99LD01 Datasheet HTML 29Page - STMicroelectronics L99LD01 Datasheet HTML 30Page - STMicroelectronics L99LD01 Datasheet HTML 31Page - STMicroelectronics L99LD01 Datasheet HTML 32Page - STMicroelectronics L99LD01 Datasheet HTML 33Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 29 / 69 page
background image
DocID025319 Rev 3
29/69
L99LD01
Functional description
68
2.2.12
Input overvoltage programming
Supply overvoltage is programmed by the external partition ratio KI =R3/R4
According to the Figure 20 input overvoltage thresholds depend on the internal reference
voltages VOVTH1 and VOVTH2 (being VOVTH2 < VOVTH1)
Typical values of these internally generated references are 3.5 V and 3 V.
When the Battery voltage reaches a value in excess to VS_TH1 the converter is immediately
stopped. When the battery voltage, going down, reaches a value just lower to VS_TH2, the
converter restarts again.
Figure 20. Input overvoltage programming
Table 3. Suggested KL value and overvoltage thresholds
N
Number of LED
KL
LED CHAIN nominal
DROP N*VF [V]
overvoltage VLED_OV [V]
1(1)
0.583
4
6
2(1)
0.292
8
12
3(1)
0.194
12
18
4(1)
0.146
16
24
5
0.117
20
30
6
0.097
24
36
7
0.083
28
42
8
0.073
32
48
9
0.065
36
54(2)
10
0.0583
40
60(2)
1.
Not Applicable on boost converter topology, since the chain LED Drop must be always larger as the maximum battery
voltage.
2.
Theoretical value; effective value will be clamped to 52 V (typ) by the OV protection.



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 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69


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