Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

LD1611 Folha de dados(PDF) 8 Page - LDT Co., Ltd

Nome de Peças LD1611
Descrição Electrónicos  High Power LED Driver
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  LDT [LDT Co., Ltd]
Página de início  http://www.ldt.co.kr/
Logo LDT - LDT Co., Ltd

LD1611 Folha de dados(HTML) 8 Page - LDT Co., Ltd

Back Button LD1611 Datasheet HTML 4Page - LDT Co., Ltd LD1611 Datasheet HTML 5Page - LDT Co., Ltd LD1611 Datasheet HTML 6Page - LDT Co., Ltd LD1611 Datasheet HTML 7Page - LDT Co., Ltd LD1611 Datasheet HTML 8Page - LDT Co., Ltd LD1611 Datasheet HTML 9Page - LDT Co., Ltd LD1611 Datasheet HTML 10Page - LDT Co., Ltd LD1611 Datasheet HTML 11Page - LDT Co., Ltd LD1611 Datasheet HTML 12Page - LDT Co., Ltd Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 13 page
background image
Ver1.1
8
LDT Inc. WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 7300 Fax. +82 41 520 7337 www.ldt.co.kr
LD1611
High Power LED Driver
11.2 Setting the Output Current with Resistor (R)
If R pin voltage is below 0.2V then the switch is on. R pin voltage is over 0.2V then the switch is off.
So, typical peak to peak ripple current in the inductor is 15% of LED current (if).
if = 350mA setting
ia = if +
Δif/2 = 350mA + 350mA x 0.15/2
= 376.25mA
Δif ≈ 15%x if
Va = R x ia
 R = Va / ia = 0.2V / 376.25mA
≈ 533mΩ
if = 800mA setting
ia = if +
Δif/2 = 800mA + 800mA x 0.15/2
= 860mA
Δif ≈ 15%x if
Va = R x ia
 R = Va / ia = 0.2V / 860mA
≈ 244mΩ
if = 1500mA setting
ia = if +
Δif/2 = 1500mA + 1500mA x 0.15/2
= 1612.5mA
Δif ≈ 15%x if
Va = R x ia
 R = Va / ia = 0.2V / 1612.5mA
≈ 124mΩ
11.3 Inductor Selection
Higher values of inductance are recommended at higher supply voltage in order to minimize errors
due to switching delays, which results in increased ripple and low efficiency.
High value of inductance also results in a smaller change in output current (if) over the supply
voltage range.
L = VLED x toff /
Δif
VLED = Vf x N
N = # of LEDs in series
Toff = 1.5us
Δif = 15% x if
If N = 3, if = 350mA, Vf = 3V
L = 3V x 3 x 1.5us / ( 0.15 x 350mA )
≈ 257uH


Nº de peça semelhante - LD1611

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
LDT Co., Ltd
LD1610 LDT-LD1610 Datasheet
536Kb / 16P
   High Power LED Driver
More results

Descrição semelhante - LD1611

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Diodes Incorporated
PAM2842 DIODES-PAM2842 Datasheet
503Kb / 17P
   HIGH POWER LED DRIVER
logo
Intersil Corporation
ISL78100 INTERSIL-ISL78100 Datasheet
713Kb / 19P
   High Power LED Driver
logo
Princeton Technology Co...
PT6904 PTC-PT6904 Datasheet
371Kb / 4P
   High Power LED Driver
PT6901 PTC-PT6901 Datasheet
230Kb / 4P
   High Power LED Driver
logo
Agamem Microelectronic ...
AA1716 AGAMEM-AA1716 Datasheet
45Kb / 1P
   HIGH POWER LED DRIVER
AA1702 AGAMEM-AA1702 Datasheet
46Kb / 1P
   HIGH POWER LED DRIVER
logo
Princeton Technology Co...
PT6901 PTC-PT6901_10 Datasheet
230Kb / 4P
   High Power LED Driver
logo
List of Unclassifed Man...
MLX10803 ETC2-MLX10803 Datasheet
462Kb / 25P
   High power LED driver
MLX10803 ETC2-MLX10803_06 Datasheet
461Kb / 25P
   High power LED driver
logo
IK Semicon Co., Ltd
IK2804 IKSEMICON-IK2804 Datasheet
590Kb / 12P
   HIGH-POWER LED DRIVER
IK2802 IKSEMICON-IK2802 Datasheet
597Kb / 12P
   HIGH-POWER LED DRIVER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
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